upon further examination, this system seems really buggy for some reason. This is my set up: An XP computer upstairs with two ethernet cards with internet sharing enabled. A crossover runs from this computer to a wireless router downstairs. Another XP computer downstairs which is plugged into the router, linksys BTW. Also I have my OSX laptop sitting next to the upstairs computer (for testing purposes ATM is connected to a neighbors unprotected wireless, normally use my own). Anway, because of the way my network is set up the two XP boxes normally cannot share music with each other, but now hamachi is running on both they are sharing great. For some reason though, my OSX powerbook can only see/connect to the upstairs computer, ignoring the downstairs XP computer. The upstairs XP computer can see and connect and share music with both, OSX powerbook and XP computer downstairs. The downstairs XP computer can see both, but can only connect to the XP computer upstairs. Really long winded I know, but i would love to get this working flawlessly. Let me know if you have any ideas...