my dad pc is 7 years old so i want to build a new one for him. im going to use hard drive, case, dvd drive and power supply from his old computer. Im going to get Athlon II X2 245 http://www.newegg.com/Product/Product.aspx?Item=N82E16819103687, ASUS M4N68T-M AM3 NVIDIA Geforce 7025/nForce 630a...