Good build?

You might want to consider a SSD instead and perhaps some faster RAM.

I would go with a 2GB video card if I were you, the MSI Radeon HD 7850 isn't much more expensive than the one you have listed, it's one of the cards I'm considering getting when I build my own PC very soon. (I have noticed that GPU prices seem to have gone up quite a bit in the last few days though, maybe you should wait a bit for them to drop again before committing to a purchase)

Going with that CPU and Mobo you're not leaving yourself any space for future upgrades... You should look into getting an AM3+ mother board with an AM3 or an AM3+ CPU, such as the FX 4100, which should be around the same price. Also, I think the 7850 shouldn't cost much more than the 7790, so if you can move some things around I'd highly recommend going with that instead.

It's a decent build for the price. But you can drop a stick of ram and go for 4 GB (no game on the market requires more atm and you can easily add more later) and drop the DVDWriter and invest the money in something else like a better GPU. That would get you an extra 40 bucks that you can spend on a better GPU and then you can go for either a Radeon HD 7850, an GTX650TIB-DC2OC-2GD5 BOOST, or even an GTX 660 maby.

That's what i would do anyway :P

Go with the AMD FX-4300.. it's $20-30 more expensive but you will get SUCH a performance boost compared to the ancient Athlon processor you have chosen (All in the athlon series literally SUCKS)

Let me know what your MAX budget is and i will put together something nice for you (i have been building PC's for many years)

try to get a phenom ii x4 or x6 and overclock the hell out of it
better (single core performance, and they are true quad cores) and cheaper than fx series.
fx4 series is a dual core with 4 threads, fx6 triple core with 6 threads, fx8*** quando core with 8 threads.
and with a decent am3 board you can still later upgrade to fx series
get a hd7850 instead of the hd7790.
also get a better psu, 550w/600w atleast

A few days ago Newegg had deals for 7850s around that price range
Anywho here are a few GPU recommendations, althought I'm not sure if the CPU will bottleneck it or not.
HIS 7850 IceQ X 2 GB - $150 via Amazon
PowerColor 7870 2GB - $160 ($30 mail-in rebate) via Newegg
XFX Radeon HD 7790 1GB - $89.99 ($20 mail-in rebate) vis NCIX US