said by dogma:
Is there a [cheap] PCI card that has both a DTV tuner COAX input as well as a COAX/HDMI output?
Tuner card is separate from output. You just need a computer with the proper DVI / HDMI output for your monitor (TV) for the output. Tuner card is input only.
Don't try to do this without Windows 7. That's when it started working really well.