Ok, what you have to do is make it so that you can see hidden files & folders.
Go to My Computer. Now click on Tools > Folder Options > View. Put a dot in the circle next to 'show hidden files & folders' > Apply > ok.
Now, you should be able to see the Application Data folder & also the LimeWire one within App Data. Delete that LimeWire folder.
Only do this when LW is properly closed.
Yep, tell us what numbers are on that 2wire device