I put the clockwork version in clockwork\downloads\boots and i didn't extract. When i went to recovery and tried to install it took like 5 seconds (it went to fast to read what it was doing) and the reboot screen came up. When i rebooted my old rom loaded up.
i was just reading a Dominator thread at droid forums. since it is a nandroid back up you have to extract. download the file on the your comp and then extract it. now place the folder in your nandroid backups folder and then you should be good to install