Looking for $500 - $850 Laptop

Hello,
I am looking for a good performer for office applications, general web apps, and with sufficient graphics and speed for occasional gaming.

Here are my requirements:
17"+ display
4G+ RAM
320G+ HDD
built in 802.11 b/g/n
built in bluetooth
Webcam
Windows 7 / 64 bit
DVD (Blue ray optional)

The main questions are around the processor and video card. I have heard that the built in video card will bring it to its knees if I run any games. Also - the toss up seems to be between the AMD x2, x4 processors and the i3/i5-460M CPUs.

I have a desktop PC for when I am home, so this is for strictly when I travel (which is occasional), and when I am working from a coffee shop off site.