ok, on a pc now. and where are my manners? Welcome to the forums! Someone here will get you straight, if I don't.
Do you know what recovery you have? If you rooted with Revolutionary, it asks to put the Clockwork recovery on.
One that we suggest in here is amon ra 2.3. the directions for installing it are found in our Rooting gingerbread for dummies stickie.
http://androidforums.com/evo-4g-all...ooting-dummies-guide-gingerbread-edition.html
"Recoveries
So what is a recovery and why do i need one now that i am rooted? in recovery that is where the magic happens. it is where you will flash roms and make nandroid backups as well as restore them. it is basically a mini os. your phone basically consists of three parts. it consists of android(gingerbread), bootloader(hboot), and finally your recovery os.
roms and flashable .zip files use scripts to tell recovery how to install the file. there are basically two kinds of scripts used. one is amend and the other is edify. most roms and flashable zip files use amend scripting. the problem is that clockwork mod 3 and higher do not support amend scripting. only clockwork mod 2.6, amon ra 2.3 and teamwin's trwp has support for both amend and edify.
Switching Recoveries
speaking of recovery i would really recommend that everyone switch to amon ra 2.3. it is a much better recovery then clockwork mod. you can get the recovery here

C36IMG RA 2.3.zip
here are the instructions:
1.download the file.
2.rename the file by erasing the "_RA_2.3" part of the name so that it is only named PC36IMG. make sure not to add ".zip" to the name as windows hides extensions.
3.transfer the file to the root (that means not in any folder) of the sd card.
4.power off (you most likely need to uncheck fastboot. settings/apps/uncheck fastboot.) then press and hold power+vol down.
5.hboot should see the file and select yes to update.
6.select no to reboot because we want to go into recovery and make a nandroid backup.
7.select recovery.
8.select backup and restore and select backup
9. select the first three and wimax. the other partitions do not need to be backed up. always keep one nandroid backup with wimax keys backed up on your computer.
10.now you can reboot.
11.using a file manager of some sort or even through your computer via usb, you should rename or delete the PC36IMG file on your card. otherwise you will be asked to update every time you go to the hboot screen. you do not need that file any more. "
Once you get that done, will talk to you about going in to it a and wiping the caches. Try that first.
edit: link to amon ra recovery.
PC36IMG_RA_2.3.zip