well,im glad you got it figured out. sorry i couldnt get back sooner,and i drive for a living,and typing replys on the internet is generally discouraged

some days are busier than others and i can reply to things while im sittin in the warehouse bored. but unfortunately today was not one of those days!
not much to add at this point,as i think youve figured everything out,but just in case heres a few things that come to mind:
-rooting means gaining control of all of your phones systems,files and functions. when youre rooted,you can change litterally anything in the stock software if you know how,and you gain the ability to flash completely new software if you want to. this is what you are doing when you flash the xtrSense.
-the 2 files in the dummies thread root your phone and then install a custom recovery. the first root file is what does the actual "rooting" or give you super user access to your phones systems. the second root file installs Amon_RA's custom recovery so you have the ability to easily make and restore backups and install new roms. at this point you are done. as metl said,you can be rooted and stay on the stock rom,and use your superuser access to change tings to your liking. once you are rooted,you will stay rooted,well,unless you conciously unroot by flashing a certain file

flashing xtrSense was a completely optional part of the process,and not needed to finish the root.
-flashing new roms and restoring backups are a completely different things.metl described it quite well,so not much more to add. when you do the wipes,you always want to do them before installing the rom or restoring the backup. when you had to sign in above after restoring,im not sure if you restored your backup,then did the wipes,or if you simply wiped and re-installed the rom. either way,thats why you had to re-sign in to google. when you restore a backup,it will reapear just as you left it.
-unfortunately,you will need to re-setup your phone whenever you try new roms. but luckily syncing contacts with gmail,and using titanium to backup apps makes it fairly painless. like metlcat,i enjoy setting up a new rom... to me its fun and exciting.
umm, i think thats it. hopefully that all makes sense
