What is your OS ?
Here is what I do if you use Win2k & WinXP
Right click on the folder that you want to share, enable the sharing.
right click on the my network places choose properties, right click on local area network, choose properties.
choose install, install protocols, choose IPX/SPX/NetBIOS
after all done you should be able to see the share computer & folder in my network places after a couple minutes.
hope that helps.