Vista - Help Setting Up Live TV

Hi,

I know other people have asked this question and I can't seem to understand the solutions to any of the other threads posted across the internet. I figured I'd try again and ask you guys.

Anyways, I just got my new Dell M1530 and the specs are as follows:

Core 2 Duo 2.6 gHz
4 GB RAM
Nvidia 8600gt
AverMedia AverTV Hybrid NanoExpress
Windows Vista Home Premium SP1 x64

I don't know if you need to know anymore information.

Anyways when I try to set up Live TV it detects my card all right and even sees that its connected to a cable, so that part is fine.

But then when I actually go to watch the Live TV in Media Center (as a matter of fact with ANY program) the screen is green with random lines appearing and static noise.

I read that there is an issue with Vista x64 and 4 GB RAM and watching Live TV, but I can't seem to find a solution. Can anyone help me please?