I installed Clockworkmod droid 2 bootstrapper, and I am able to run backup from the blue (recovery) screen (after I hold down power+Home keys), I can see the backups under /sdcard/clockworkmod/backup/<date>/*.img, though I did not see zip file created. That is not a big deal, as long as I can figure out what should be the correct zip archive structure, or somebody can tell me, I can get it work. The problem is that when I try ROM Manager, which is flashed "ClockworkMod Recovery" version 22.214.171.124, The option "Backup current ROM" does not work, it goes to recovery mode for a couple of seconds, and then jumps out and reboots the device. The same problem for "Reboot into Recovery", you can see the triangle with ! in it and a little android avatar by the side for only several seconds and then reboot it back to normal phone screen. I have updated my phone from verizon (unrooted my phone, and run the update, and root it again). My busybox uname -a shows "126.96.36.199-g462500f #1 PREEMPT ...", and Settings/About Phone has system version 2.3.20.A955, and Android Version 2.2. I am not sure whether this is something to do with the newer version.