So you also tried the Add/Remove Programs control panel? If that doesn't work then send the LW folder to the recycle bin.
Anyway, after getting rid of it. Reinstall LW using the english installer. May I suggest you install the beta 4.3.3 since it has overcome some bugs that LW 4.2 had. Get it here:
http://www.limewire.com/english/content/beta.shtml or if you're a Pro user you'll find it at the bottom of your personal downld page.