>>It may be worth your while to uninstall 5 and just upgrade other apps to 6 when needed. After you uninstall 5, you may have to reinstall the SP3 to clear out any other problems left behind.
>
>It may come to that


FWIW, I was having the trouble without 5.0 installed. So, I don't really think uninstalling it will solve it for you. Can you consider upgrading to NT or W2K?