the recoveries in my phones, amon ra recovery and clockwork recovery, you dont have to rename the files to update.zip. theyll flash any proper zip. if your recovery has a flash any zip option, you dont have to rename it.
yeah i had clockwork recovery on my too like rom manger right > ? i had that but do i but it in a zip folder or a regular one and where anywhere on my sd card because im using my blackberry to my my sdcard in there and put the thing like that and put back to my android
i dont use rom manager. i just put them wherever i download them on my sd card, boot into recovery, then flash it from whichever folder i put it in. rom manager is too bothersome for me, lol. plus it has its own issues.