Windows 8 user cannot connect to public OS X Lion share as Guest, keeps asking for a password even though the folder is public?

As title suggests...

OS X Mountain Lion public share works fine for Mac's but as a guest from Windows its adamant it wants a password. If I use proper credentials it will allow me in the public share from the windows PC but I dont want to add creditinatials it should be an open folder to Network (LAN) WORKGROUP users.

• OS X Guest account is set to "allow guests to connect to shared folders"
• The Public folder is set in "Sharing" as READ ONLY everyone.
• Mac's can access the share without needing credentials.
• Windows PC asks for Username and Pass (have tried Guest (no password) or just pressing enter (no details)

Searched these forums see a few other people with similar problems yet no Answers 😟

Help please!!