HELP: Hauppauge troubleshooting

I just bought a Hauppauge WinTV-PVR-150 MCE
Now the problem is it does not work in my system

It detects and installs the software fine, but I start getting choppy images and the a complete black screen.
Specs: Core i7 920 with 6GB RAM GTX260

I tried in another PC with same config, but with 3GB RAM, it works perfectly.
I got the card replaced twice.
Can someone help me out on how to get it to work on my system.

YouTube - Hauppauge WinTV-PVR-150 Problem

Is it in Vista 64 with more than 4GB RAM ?

Then check this post of mine for soln :-

http://www.techenclave.com/1130235-post15.html

dude that file is not there on the server anymore
can u upload it if you have it

UPDATE: I found the driver and it is not working
but this fix worked and i lost 2 GB RAM
but what the hell I dont need so much RAM as it is, do I... I mean I hope it doesnt affect my game performance
but when i need i can switch back to 6GB
kinda frustrating tho

1 - Pressed START
2 - Typed: "msconfig"
3 - Moved over to the "Boot" tab
4 - Clicked "Advanced options..."
5 - Checked off "Maximum memory"
6 - Decreased memory from its full amount to 4088
7 - Clicked OK and accepted my changes & rebooted my computer