I have the PC-DVR from Swann Security, and even though it isn't listed as supported anywhere, I asked their tech support about Windows 7 in October, and they said Windows 7 support was coming.
I checked regularly and saw no announcement, so I asked again a couple of weeks ago, and received this message. I have now upgraded to Windows 7, and it seems to work, although the cameras are pointing to worthless places right now, so I am not recording, and can not vouch for how stable it is.
I am actually looking to potentially use their card & driver with different software, since I don't like the way it manages its window (or fails to). It is not a resizable or movable window.
But that was a problem on Vista as well. Any suggestions?