How is it risky? If you know what you're doing there really isn't much that can go wrong. I built an ion engine too. That was cool.
Bought a 9600 GSO on tigerdirect. Came out to $48 including shipping. I think I got my money's worth.
If anyone sees any epic deals on cards, let me know. I'd really like to get my hands on a HD 5450 or 5570, GT 240, HD 4650, or 9800GX2.
Any card would be fine though. I'm gonna have some epic pics coming soon too.