A link to this site for my discovery on a Vmem mod for the Iwill (Rdram) P4R533. It works GREAT!
Vmem modhttp://forums.overclockers.ws/vb/showthread.php?s=&postid=866753&t=701#post866753
Vmem modhttp://forums.overclockers.ws/vb/showthread.php?s=&postid=866753&t=701#post866753