+1 for the rom manager. Download it from market and go to town. Makes things flawless. There is a custom rom thread right here in the Hacks section of this board but reading it wont mean much if you dont understand what they are talking about so get the Rom Manager and download any rom you want right in the manager menu. Be sure when it promps you after downloading the rom to back up your existing rom and data, do it and you can go back anytime you want. I'm running jrummy right now and its the stuff. He has a customizer in the RM that gives you options to pick as you go so its stupid easy. remember BACK UP before you download a rom and you can do a restore to correct any mistakes or things you don't like. i know, alot to learn but thats part of the fun and this board is a great resource, search is your friend and these guys are great.
Happy Rooting LCH