vsliter,

Your gnutella.net file will be within a different folder. Try looking in C:\Users\your username\AppData\Roaming\LimeWire.
That folder's hidden by default, so you'll need to make sure that you're showing hidden files & folders before you go looking for it. More info below.
LimeWire Pref Folder in Vista

You'll also need to make sure that LW's properly closed before replacing the gnutella.net file. Have a look at the thread below. Most of the info's for XP but even though Vista has the folders in a different location, it'll give you an idea of what you should be doing.
http://www.gnutellaforums.com/connec...tml#post298705