I have a brand new 27" iMAC that I'm setting up to connect from my home office to my main office. I've been able to establish a VPN connection to the office and ping my Windows XP machine at the office. I'm trying to use Microsoft Remote Desktop to connect to my PC from the MAC and access programs and files. For some reason, Microsoft Remote Desktop for MAC won't connect to my PC. I can ping it using the Network Utility, but can't RDP into it. From my Windows XP machine at home, I can RDP into the servers without an issue. If I remember correctly, RDP uses Port 3389 on the PC side. Is that the same on the MAC as well? Any suggestions on things to try to get this RDP connection to work from MAC to PC?