Hi there,
I'm using Win2k on a ASUS P5A with a K6-III/400 and a ASUS-3400 (TNT/16mb) with the nvidia 3.84 drivers WITHOUT the ALI AGP drivers and I DONT have this problem.
Though, dialup seems to broken in Win2k. It sometimes "crashes" and won't let me dialup anymore without a reboot, i.e. the dialog box just doesn't come up anymore... really strange and annoying. Usually my modem settings are completely wrecked then ( 38400 bps, no error correction and no compression). So I think there are some bugs in the dialup sw of Win2k.
Hope that helps to track down your problem.
-Maxx
[This message has been edited by maxx (edited 22 May 2000).]