I've just tried it here with LimeWire 2.6.1 (little or no difference from 2.6.3) and it works.

I did manage to enter the wrong UNC path a few times before I checked what things were actually called - unfortunately you can't browse network location from within LimeWire.

I can only suggest that you check permissions and that you have entered the path correctly (including drive name).

If you have a secured network (no guest account enabled) then you may need to browse with windows explorer first to wake up the connection.

Mark