The title says it: I have a $750 budget for a new computer that I'm going to build, and this price includes an OS. I was thinking Windows 7 Home Premium OEM (http://www.newegg.com/Product/Product.aspx?Item=N82E16832116986), which is $100. Preferably can run most modern games on high graphics settings if possible. Also, I'm not sure if this is a given but please find all parts on Newegg. Any help would be greatly appreciated! 
-Ben
-Ben