Since this thread has the template, I'll post on this one. be patient and dont create so many new threads. People will respond. This looks like a decent build, keep looking for additional combos. Just a few things however:
If you plan on overclocking your CPU, then you'll need an aftermarket cooler. Here's one- Hyper 212+
And if you are planning to overclock and crossfire, look into a 750W PSU- Antec TP-750
The HD 5850 is overkill for a resolution of 1440x900. Even with one, you can play most games on high to max. Hopefully this helps you out.