Connecting MAC and WinXP

I have my XP station setup succesfully to see my MAC OS 10.4, but the MAC can not find or attach to the XP machine.
What I’ve done:
In the firewall setting of the XP station. I had to individually add ports to open in my network: 548, 427, 139 on both UDP and TCP. I thought this would make a difference but it didn’t. I was not able to add any ports in the “File and Print sharing” setting though. It seems like that’s where it should have went.

The MAC can see the server but not this workstation.
Any thoughts? This is my first MAC setup.