Ok so you could use Dette's ROM
http://forum.ppcgeeks.com/showthread.php?t=34284
But you need to read this thread thru out.
If you search you can find everything that you are looking for.
OK, saddly the best ROM builder is at XDA and his name is NFSFAN regardless of the flaming I may get but he is banned from here but look here :
http://forum.xda-developers.com/showthread.php?t=432487