With a $200 budget for the processor and motherboard, I would choose AMD.
For the motherboard, I would choose something such as this: http://www.newegg.com/Product/Product.aspx...N82E16813128090
. I thought it looked pretty good because it has one of, if not, the best integrated graphics chipsets you can get. The one thing I was worried about was that crucial ballistix uses higher voltages for the ram, those sticks might cause trouble with that board. I think it should be fine though because it's standard is 1066mhz ram which generally run at higher voltages.
This processor would probably be a good pick for you http://www.newegg.com/Product/Product.aspx...N82E16819103212
. you can look through others though and see if you can find better deals. I don't think you would need anything much better than that though. Each .1ghz doesn't really make that much difference and that is one of the better price/performance processors.
"I think there is a world market for maybe five computers." - Thomas Watson, Chairman of IBM, 1943