I didn't even attempt to install the one on my mobo CD. FYI, I also have BIOS version 1006, the final release from ASUS, installed. I have tried to install both versions on the ASUS website, both with the same result. Probe ran great on my Win98 systems but apparently has a few problems with 2K. Back when I had a 98/2K dual boot I got it to load in 2K but as soon as I rebooted to 2K I got some ".dll not found" error. In searching the archives here I found at least one other person with the identical problem. I am almost tempted to give MBM 5.08 a shot but I guess I had just hoped ASUS would figure out the problem or I would figure out what I was doing wrong. This is the one utility/application that is kicking my butt with Windows 2000.