First I will be nice and answer your question: Search in the Upgrades sub-forum. It is made up entirely of new ROM threads.
Secondly I will inform you: This is a great forum for people who have PPCs and want to learn more about them, and we welcome anyone who would like to join us, but you have done two of the things that most people would chew you out for
1) You did not search, or if you did you did not search hard enough.
2)You posted a new thread without any type of description in the title.
I'm glad you're here and I want you to stick around, so to avoid tongue lashings from others, stick to those rules. Not only here, but at any forum you visit.
