Damaged Add/Remove Program List

I am running Windows 2K and recently uninstalled MDAC 2.0. Ever since, when I try to run the Add/Remove Programs utility, I receive the following error:

An unexpected error occured

Class not registered

res://appwiz.cpl/listbox.htc
Line:225

I have been to the Windows knowledge base and have tried all of their resolutions but with no success. Any ideas? Can I simply reinstall that program?