OK so I'm trying to get this shared folder thing happening. All is good so far - my Windows XP Home desktop is showing up in Finder on my MacBook (Leopard) and I can see the SharedDocs folder... however at the top it gives you the option to be connected as a Guest, or to Connect As a Registered User.

My problem is that I enter my name and password (the XP username and password on the other computer), but it still only grants me guest privileges, not registered user privileges.

Any ideas?