I was reading through that really fast. I was expecting to see an HD in there. Why'd you choose an ASUS? They're more expensive than other brands that are more focused on GPUs (XFX and Sapphire).
What's your monitor's resolution? That's the most important criteria for deciding on a video card.
Without knowing the BUDGET, I can tell you that the 5750 is NOT a gaming GPU. You'll need at least a 5770 for any kind of decent resolution. Even then, the 5770 isn't really a gaming GPU, but it's the only good choice under $200. If you can afford more than that, the HD 5850 is the best GPU that's still reasonably priced at $310.