>While attempting to install Service Pack 5, I get an error in "OAINST" that I can either Cancel or Ignore. Ignore doesn't work, Cancel causes "This program has performed an illegal operation".
>
>I reinstalled Visual Studio 6.0 but without success. I cannot install IE 5.0 because a message is displayed that previous installation was not completed.
>
>Anyone have any ideas?

Robert,
I got an error related with MSWINSOCK.OCX and was not able to install until I manually deleted MSWINSOCK.* files (try at your own risk).
Cetin