I'm running OSX 10.3.8 and WinXP Pro.
My computers run into a generic no-name brand switch and then that swtich runs to the wall. I live in a dorm...so wherever the wall goes from there is unkown to me.
Since I'm on a network with literally thousands of other people at my university, everybody seems to have set their own workgroup on their PC. Mine is set to MSHOME.
I only have the stock windows firewall and have tried it both enabled and disabled with no luck.
The mac can see all the PC's on the network, but can't connect.