With 3.5 I was using a little shareware prog called Smart Wheel ($15 reg)that let me use an Intellimouse wheel to scroll the SR library window. Very cool. W/all the trouble I've had w/my 4.0RT/DS upgrade, I took it out of the system along w/everything else I thought might be causing the problems. When things get stable I intend to put it back in.
Update: I've had in back in the system w/out incident for months now. It never was cause of any of my early system problems.
BTW the same people make SmartBoard which is a nice clipboard stacker.
Available from Insight Software Solutions, Inc. http://www.wintools.com/