I use VNC around my house to access computers remotely. While I can access my Windows machine from my Mac, I am having trouble accessing my Mac from Windows in a reliable fashion. I am now using VineServer on the Mac and TightVNC on the PC, but after a while it will become unresponsive, and require frequent re-connects and refreshes. Apple's Screen Sharing is amazing running from Mac to Mac, but I don't have an extra Mac for downstairs at the moment. Is there a way to access OSX's built in screen sharing from a PC? Or a better server for Mac or client for PC that will give better connectivity? Bandwidth is not an issue, I can manage 250mbps+ between the two computers over Gigabit.