Some Vista users have fixed their connection problem by uninstalling both LW & ZA, then reinstalling LW
first & finally reinstalling ZA. Don't uninstall LW via Add/Remove programs (or the Vista equivalent), uninstall from start > all programs > limewire > use the uninstaller there.
If this doesn't help then.....
Please post your system details. See Link below
System details - help us to help you (click on blue link)
Also see...
See Birdy's Thread Here.
If LW Will Not Connect.
.