I second this post. I am in the EXACT same situation as the original poster and I'm frankly embarrassed that I can't figure out what to do next.
If we're making huge requests, can you write it up for mac users? There is a surprising lack of documentation for us. I hope this doesn't open me up to a flamewar - if it counts for anything I've been lustily eying windows 7..
edit: I'm an idiot and had not googled the right question. If you run a mac, and have the bootloader unlocked already please see this link:
http://theonda.org/articles/2010/03...-performance-boost-and-some-serious-geek-cred
use your brains to suss out the relevant directions, make sure you have a more updated version of ROM Manager or RA or whatever custom recovery you want and basically just ignore the stuff about custom radios etc. You're basically just using the terminal (or whatever windows / linux does) to flash the custom firmware back on.
Again if you have the bootloader already unlocked (icon appears on startup), just find generic directions for your OS on how to install custom recovery. On the mac, it's simply few terminal commands using the fastboot program linked off the page linked above.
Sorry I can't be of more help - i have to be up early and it's pushing midnight.