Every time i start Limewire and there's a new shared folder called 'completed' (400 winzip files). I have downloaded a wrong, 851,7 kb winzip file. When I close Limewire it pops up again!

I don't know how to fix it, every time the new folder comes up, I just delete it. How can I find and catch the virus.
Should I just re-install Limewire?