OK so once rooted. Titanium Backup installed. What exactly needs to be backed up prior to installing a ROM? Just the Apps you downloaded form the market? Then once you have a ROM installed if you want to go back to stock what exactly do you need to do? I have someone asking me this and I don't want to give them bad gouge here. Aparently he has tried to back up the original ROM with ROM Manager and he said his phone reboots immediatly upon doing this so he is not sure how to get the phone back to original if he does not like a ROM after installing it.