Sara if you want to start with a fresh new version I would try doing this. Go to Start > Programs > Limewire > Uninstall. This is the correct way to uninstall. Once you have done this, go to Search > all Files and Folders and type in Limewire. Now delete anything and everything that comes up. Now you should be ready to download a fresh updated version from here.
Lime Wire » Official Website & Free Download «. Hope this helps.