Sounds like your computer might be infected. Is LW restarting all the time as well? Check out these threads...scanning with AVGFree AV fixed the options problem in the first thread. The second thread has more fixes to try, if LW's popping up all the time as well

http://www.gnutellaforums.com/downlo...s-options.html
http://www.gnutellaforums.com/genera...s-options.html