I don't know where you got your versions from, but if it wasn't from the official site then there's no guarantee about the quality of those versions. If I were you, I'd uninstall what you have now & then download an official version. Just the basic free one.
If you install a new version then you'll lose whatever's installed now...so if you do want to keep that Pro that you downloaded earlier, make sure that you've saved & backed up the installer.

Have a look at LOTR's instructions for uninstalling & reinstalling here: http://www.gnutellaforums.com/window...tml#post320995

Installing using that link will get you an official version, it's just a different download link to what's posted on the site's download page. There have been some probs with corrupted installations recently & that version should avoid those probs.

Once you've installed the new version, if it's not connecting - go through the 'if LW will not connect' thread in post #2. Try those fixes & if nothing there helps then we'll need your system details