Attached Link: http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx

XP Pro can and does support up to 4Gb of RAM. See URL. Despite the page specifically mentioning Pro, Home also supports 4Gb. Forthcoming XP 64 Pro will support 64Gb. Now all that's needed is a 64 bit version of Vue Infinite....

Cheers,
Mark