you run an hd pvr through a mac, right? any chance you or anyone else who reads this thread could give me a quick how-to? i have the demo version of the PVR for mac software but it won't detect any video OR audio signal. ive plugged in just about anything for this thing that could possibly be plugged in to anywhere i could plug it into, followed the instructions from the package to a T, but it wont pick up a signal. any ideas stev/anyone?