I just rooted my phone about a week ago, and this was after months of debate. I then held out on any custom ROMs until today. I downloaded and updated my phone manually to FRG01B this week as well.
The issue I'm having is that I can't seem to install any custom ROMs with success. Thank god I decided to buy and install ROM manager first and create backups (duh).
First I tried Kangerade as I've heard nothing but good about it. Downloaded it directly from the JRummy thread and put it in my root. Once I got into the ROM installation and had it completed I got stuck in a boot loop, eye, droid, and back and forth. I ended up saying to hell with it and reloading a backup I had.
After doing this several times, I finally gave up and decided to try cynogen or however you spell it. Downloaded it through ROM manager and then when the phone rebooted after making a backup, it did the Motorola "M" then an exclamation point next to an image of the phone. I was able to do a battery pull and it went back in fine to my previous ROM.
Any suggestions or things that I may be totally screwing up? Thanks in advance!