Where did you look?
Whilst LW is open, go to LW's menu Tools-Options & Sharing & this window will list all your shared folder (this is also where you can add new shared folders.) In your LW library window, your shared folders should be listed at the top left. If you don't know how to find these folders on your comp, select a file from one of these shared folders & press the Explore/Browse button. This will open the folder up for you.