Okay that makes sense, kinda like here is an engine that is not put together, all the tools you need, and an instruction book...put it together.
I do not think it matters which order you flash, I would suggest rom then radio (download both first). Also get titanium backup before flashing the rom so you can backup your apps/data and restore without using the market.
To flash the rom follow these instructions
flashing a rom in recocery
*manipulating is done in clockwork via the volume rocker to move up and down,and the home softkey to select. you can go back to a previous menu by selecting the back option at the bottom of each menu,or by using the "back" softkey
*ALWAYS make a backup of a good working rom before flashing a new one. this will ensure you have a safepoint to return to if something happens,or you dont like your new rom
-download and transfer the rom to your phone using the method described above
-boot into clockwork recovery using one of the methods described above
1)make a backup
-select backup and restore
-select backup. be patient while it makes its backup,it takes awhile.
-go back to main menu
2)wipe data/cache/dalvik cache
*note that in some select cases,when updating a rom with a newer version of that same rom,the developer may tell you "a full wipe is not needed" in wich case you can eliminate the data wipe. most of the time,however,its a good idea to wipe all 3 of these things
*using the volume rocker and home softkey,in the main menu in clockwork recovery:
-select "wipe data/factory reset".scroll past all the NOs and select "yes-- delete all user data"
-wait for it to say "data wipe complete". youll be back at the main menu
-select "wipe cache partition". scroll past the NOs and select "yes-- wipe cache"
-wait for it to say "cache wipe complete". youre now at the main menu again
-select "advanced"
-select "wipe dalvik cache". scroll past the NOs to "yes- wipe dalvik cache"
-wait for it to say "dalvik cache wiped". youll still be in the advanced menu,so go back
congratulations. you have just done a full wipe and are ready to restore a different backup,or flash a new rom!
3)flash rom
*using the volume rocker and home softkey,in the main menu in clockwork recovery:
-select "install zip from sdcard"
-select "choose zip from sdcard"
-find and select the ROM you downloaded and transfered to the root of your sd card
-scroll past all the NOs and select "yes- install [whateverrom.zip you selected]"
-be patient,some roms can take what seems like forever to flash.
-wait for it to say "install from sd card complete".
*
special note: cyanongen mod,and many other AOSP roms require a seperate flash of google apps add-on,or "gapps". youll need to have downloaded the appropriate gapps file and placed it on the sd card,along with your rom, if youre flashing a rom that needs them(example cm7). if youre flashing a sense rom,youre done- skip th next step.
-if you are flashing cm7 or an AOSP rom that requires gapps,do that now. youre still in the flash zip menu,so once again select "chose zip from sd card". find and select your gapps file. just like flashing the rom,scroll past the NOs to "yes- install [whatever your gapps file is called]". wait for "install from sd card complete!"
-so now youve flashed your rom,and your gapps if needed.youre still in the flash zip menu,so go back to the main menu.
-select reboot system now. dont panic,first boots can take awhile.
give it at least 15 minutes before you decide that its hung at a particular point
congratulations,you have just flashed a rom. in most cases when it reboots it will come up on the "touch android to begin". go thru the setup process and enjoy your new rom.
Now for the radio
Flash in Hboot
*first and foremost,while it is really cool to have an engineering,security off bootloader,it comes with great responsibility. flashing a bad or incomplete file in hboot can brick your device,so use extreme caution.
-make sure you are only using files from reputable,known developers
-make sure you are checking the integrity of files by verifying md5 sums
-make sure your phone is well charged,as powering off during a flash could be very,very bad.
so here is the safest way that i know of to flash files in hboot:
1)download the file to your computer *note:do not unzip
2)use a file verifier to compare the md5 sum of your download to that listed for the file.there are lots of free file verifiers,heres an example here:
Home of the MD5summer . this saves you from transfering a bad file to your phone,but is a somewhat optional step.
3)connect your phone to your computer and place it in disc drive mode. transfer the download to the root of the sd card(top level-not inside a folder) however you are comfortable. i personally open a couple of windows explorer windows and drag the download from one window to another.
4)rename the file on your sd card to "PG05IMG" if youre using windows. if youre using something else,you may have to add the ".zip" manually to the file name. windows likes to add the file extension automatically,then hide it,so if you type in "PG05IMG.zip" you may be actually naming the file to "PG05IMG.zip.zip". also please note that is a number zero,not a letter "O"
5)if you havent done so allready,now is a good time to right click on the drive that represents your phone in a windows explorer window,and then click "properties". your phones sd card MUST be formatted FAT32 in order for an hboot flash to work. if you find now that your sd card is formatted something else,youll need to back up everything on it to your computer,and re-format it to FAT32.
6) eject your phone from your computer first. then select charge only mode on the phone. if the phone has sufficient charge(some say 70%,i personally charge mine all the way) unplug the usb cable.
7)f youre currently on a custom rom,go to settings/power and make sure "enable fastboot" does NOT have a checkmark,as this will prevent you from entering hboot from a powered off state.
8) check the md5 sum again. you can use astro file manager,or a market app called "scary aliens android file verifier". this is the most important preventative step,IMO,as THIS IS THE FILE that youre going to flash. it could have become corrupted tranfering it over,so just because it was right on your computer,does not mean that its safe.
9) power off your phone
10)power on while holding volume down. if you have named the file correctly,and have a properly formatted sd card,the phone will find the file. youll see a couple status bars as the it unpacks it,then checks it. when its done it will ask you if you want to update.
11)select yes to update by pressing volume up.
12) youll see more status bars as the phone does things. if youre flashing a full ruu,sit back its going to take awhile. at this point i gently sit my phone down and let it do its thing. you dont want to drop it and have it land on the power button,or spit out the battery,so put it down and dont mess with it.
13) when the update is complete,it will tell you so. in some cases you may have an option not to reboot,in wich case you could manuver to recovery if you have something to do there. otherwise,reboot.
14) upon reboot,IMMEDIATELY DELETE the PG05IMG file from your sd card,as every time you enter hboot,the phone will find it,and try to update. this can be a big problem if you are stuck in a bootloop,hung up at a spash screen,or have some other problem that you need to get to recovery to fix.
enjoy your new radio,splash image,recovery,or whatever it was you just flashed
I suggest either deleting the zip or renaming it right after the flash. You do not want or need the PG05IMG.zip on your SD card at all times and it can cause issues for you if you keep it there.
If there are any steps you are unsure about please just post here.