Hello SW collegue. I have got a question about this memory trick. My VAR here in the Netherlands gave my basically the same line to type except an extra /SOS has to be added behind userva=2900. Since I actually notice a speed slow down when using this 3GB switch I wonder if this is caused by /SOS. Does anyone have n idea here? My Xeon system with XP and 4Gb memory runs better without the 3GB switch now and I wonder why. regs