melati,
You've posted 4 times now in different forums...STOP IT. Enough.

Have you tried to uninstall LW? Did you try to uninstall it because it was always popping up & never staying closed? Or is LW still on your computer, but you keep getting these popups? Do they keep popping up all the time? If that's what happened, you probably have a worm. Try the fix here, it's worked for a lot of people.
The easy fix for Limewire popping up every few seconds (try this first)

If you were not having the problem of LW popping up, let us know please.