I just purchased a new iMac (2.66 c2d & 4gb of ram), Parallels 4, and Windows XP. I would like to get great performance whenever I use Windows XP and would like to know which installation procedure would help accomplish that. Would Parallels provide me with a better user experience by installing Windows directly via Parallels OR by having Parallels utilizing a Boot Camp Partition? Which is better and why? Also, how much memory should I allocate to Parallels/Windows XP? Thanks in advance for any advice.