l think you can think about either these two models for your friend's pc.............
http://www.newegg.com/Product/Product.asp?Item=N82E16817151021
http://www.newegg.com/Product/Product.asp?Item=N82E16817151022
no...you should go for Thermaltake ToughPower W0117 750 Watt ATX Power Supply
http://www.compusa.com/products/product_info.asp?pfp=BROWSE&No=40&N=200089&product_code=342491&Pn=Thermaltake_ToughPower_W0117_750_Watt_ATX_Power_Supply