I have a coworker that uses my work PC from time to time to DL music via Limewire. He doesnt use my Laptop, so Im told. I opened itunes the next day to find a shared folder titled w/ my name and follwed with limewire tunes. Limewire isn't even on my laptop. The next day there were 2 more folders titled the same thing with the same 2 songs in all 3 folders. I searched itunes help for shared folders and there is no topic on it. I cant delete the songs or the folders.

How did this happen? The only link between my laptop and my work PC, which had limewire installed, is that while I'm here at work I plug into the same network.

How do I stop this sharing?
How do I delete the music?
Is it possible for my PC to setup a limewire shared folder via a network or did my coworker go on my laptop?

Please help.
David