Okay, this needs to be sent again. If you're just going to be surfing the web or using Microsoft Office you do not need near that amount of power. You would never even come close to using it all. Also, unless you're doing something artsy and/or for some other reason absolutely need a Mac, I would advise you to stay away from them. Apple's hardware is mind boggingly overpriced.
This is what I would suggest for you if you don't mind that it's a 17.3"http://www.newegg.com/Product/Product.aspx?Item=N82E16834230139
Intel Core i3 2310M(2.10GHz) 17.3" 6GB Memory DDR3 640GB HDD 5400rpm
If not here's a 15.6" screenhttp://www.newegg.com/Product/Product.aspx?Item=N82E16834215270
Intel Core i3 2350M(2.30GHz) 15.6" 4GB Memory DDR3 1066 500GB HDD 5400rpm