You're fine...this is a PITA for you
Ok, here's what you have to do: Make sure LW is closed. Go to My computer > double click C drive > double click Documents and Settings > double click your username. Now you should see an Application Data folder...double click that.
Once you're inside that App Data folder, you should see a folder named LimeWire
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That LimeWire folder should be there
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Delete the sucker. Then restart LW & see if it connects.