AHAA! 64 Bit with WinxP x64, but I'm willing to bet that the 4GB in the Cam station with Win x32 is only seeing around 2.7 GB, even though you installed 4 GB. I purchased a Dell Precision 690 Workstation with 4 Gig of RAM, and was disapointed when I went into device manager/system properties and saw that the OS was only seeing 2.7
Runs 2007 great anyways.
regards