My two colleagues are starting to run SW06 now. One is on SP 0, one is on SP 1. They've been having intermittent selection difficulties. The most painful one is when suddenly they can't select anything in the graphics window and have to shut SW down and restart. Another happens when, in the middle of defining a feature, they try to select a plane, say, from the flyout menu and it won't select. They can get it to select by exiting out of the feature and trying again. We're running XP, SP2, on Athlon processors with a Quadro 4 750XGL video cards. These problems sound like they could be video card related. The adaptor application shows they are running two different drivers, 7.1.8.4 and 4.3.5.1. I think that means 6.14.10.7184 and 6.14.01.4351 on the SW Graphics card testing page, both of which are approved. Jerry Steiger Tripod Data Systems "take the garbage out, dear"