First go to add/remove programmes in the controlpanel in windows and remove it there.
then do a search for limewire on all drives and delete all results.
If there still are files that u can't delete, try downloading this tool.
Unlocker
off course U will need to be logged in as an administrator to do any of these things. If not you will need your administrator to perform these tasks.
If it is wrong or not comes down to how much money you allready have filled into the gaping hole that is the record/movieindustry.
I have a very specific taste in music, which means that I would be using too much money on it if Gnutella network didn't exist, but that doesn't mean that I never buy a CD. And the same goes for movies allthough I often rent instead of buying then. The reason networks like these exist is that people are sick of these things getting more and more expensive. What would a CD cost nowadays if there wasn't P2P sharing ?