MMMMMKay. I want to try and put some input into this forum after getting some superb replies to my own thread. I consider myself to be at least somewhat reliable, but remember to take everything i say with a grain of salt.
I am actually building my own rig right now, and i am getting the same cpu and vid card you are, and those are just fine. However, i feel compelled to mention the whole intel price cuts on july 22nd making the Q6600 at a mere 266$. I'm sure there will be more price cuts to the dual cores, so if you don't mind waiting, do so.
On topic of the mobo, i'm not at all used to MSI boards so i'm going to be a little up front and biased and recommend the board i chose. It supports ddr3 for when it gets cheaper and is pretty good all around for OC'ing.
http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16813128048
On the HDD, memory, hell even keyboard we have the exact same, so all good there.
Now that monitor seems to be sold out according to newegg, so you may want to have a backup or a different choice. Are you deadset on that price or size? I bought
http://www.newegg.com/Product/Product.aspx?Item=N82E16824009111
and i can honestly say while looking at it right now, it is beautiful. Some may not like the gloss, and if you don't just try to get a high contrast ratio and a low response time and pay heed to reviewer's but don't base your decision just on that.
Finally, the case is really up to you. It's all about how you like it and whatnot. But you realllllly should, and i emphasize this, get a higher PSU for upgrades and general all around safety in the long run. 600+ should be good. You may want to take that into consideration when buying the case.
Oh yea, one last thing. I think you should change your drives to sata interfaces. IDE is out, sata is in. But that is just my opinion.