MMB freezes computer???

I have been trying to get into Blender but anytime I use the MMB, my comp immediately locks up. Could anyone make any suggestions? I have about 785 RAM, GeForce 4 card and everything else is relatively up-to-date.

Can anyone shed some light on this for me? Very frustrating. Thanks.

what mouse do you have?
[did you install the evil software that came with it?]

what version of windows are you running?

does alt+left mouse work?

I am using a Kensington 3-button USB mouse. I think I installed the evil software, lol.

Running Windows 2000 and yes, alt+left does work.