Using windows explorer search for anything LimeWire on your hard disk drive. Delete anything you find. Also check control panel>add remove programs and make sure nothing is showing there

Then run a registry checking program, and clean up your registry. If you don't have one, use the forum search fuction, upper right between f.a.q. and home, and look for one. You will find some links to several.

Then d/l and reinstall LimeWire