Hi,
You have done a big error installing IE 6 on W2K, because IE 6 use some DLL with the same name but with different version, a new "FONCTIONNALITY" of Win XP (i.e. bug fixing like pigs do), not inplement for W2K, so when you activate "Active Desktop" witch use part of IE fonctionality, if you have IE 6 instaled you go straigt away in trouble ...
The only REAL solution is to downgrade from IE 6 to IE 5.5 (and maybe upgrade from W2K SP2 to SP3) ... but now the problem is that "downgrading" is NOT a Krosoft "FONCTIONNALITY", not enouth comercial, so you will probably need to kill your W2K SP2 IE6 install and make a new one with W2K-SP3-IE5.5
Samuel