I am frustrated. It seems that any time I try run a cable or satellite signal thru a computer I end up with a poor signal. I currently have an x300 radeon tuner video card in a gateway 820gm media center computer. when i run the coax direct to my 42" plasma screen it looks great. when i run it thru my supposed "media center computer" it looks like i have rabbit ears. is this a tweaking issue or is it just what happens when you use a computer tuner card? I was thinking of upgrading to a x600 card (pci express) and dont mind spending the money if it will actually make a difference. what do you folks thinK?