Super,
if you want people to take you seriously I strongly suggest you remove that childish :P from your sig as its stretching out the page.
and if you cant get a file to delete I also suggest you run an Anti Virus scanner right away to see if that file has been infected with a virus. If in Windows you will need to reboot your computer then go into your limewire shared folder and then, delete. If it still doesnt delete after that, then you have been infected.