I had to reinstall LW due to virus. I got rid of the 12,000 zip files I was graciously given and reinstalled. I am trying to re-configure my share file. I click on configure and a screen pops up and disappears before I can even read it. Tried going into Tools and then Options and the same thing happens.

Windows XP

Maybe you're still infected. Give AVG Free a try...it's fixed the problem for other people.
There's a link for download in this thread: http://www.gnutellaforums.com/downlo...s-options.html

Make sure to update AVG before you scan your computer.