Hi! I'm looking for a video card to replace the one I have. I'm using a nvidia GeForce 8400 GS. I actually have 2 of them in 2 different computers, but there is a couple of problems. In the one computer, an AMD 3700+ with a MSI motherboard and 1 gb ram, it'll work for a while, then everything goes into red---everything is hued with red and it's tough to see the screen. I can shut it off for a couple of weeks, start it up, and it'll work fine for a couple of days, then it does it all over again. The other computer is a dual-core AMD 4200+ with an ASUS motherboard and 2 gb ram. I've just had the screen flicker (kind of jump---it's tough to describe bur it's definitely in the video)a couple of times the last 2 days, so I'm wondering about that card. What's a cheap---$30-$40 card that will work well with my systems? I'm not a gamer but do watch an occasional video. I also tried to download linux 3d nvidia drivers (I'm messing around with Ubuntu with a dual boot) and the screen was so messed up I had to reinstall. I'm looking at a used 8600 GT in ebay for $30. Any and all responses will be greatly appreciated. Thanks.