NoDoubtFreak

You need to include in your next post everything about your current setup.

Motherboard:
CPU
Memory + Timings:
Video Card:
Hard Drive:
Windows Version:

And a list of what is in your current processes.

You can download a utility called Tune-Up Utilities

Once it is installed; run it; don't worry about the trial right now.

Click on Administer & Control Tab (on left)

Click on TuneUp Process Manager

If you hit PrintScreen on your keyboard while that program is open and then include that image in your post we can see what processes may be conflicting with LimeWire. We need more information than "it isn't working" to help you better.