Building a New Computer

My Brother and I went shopping to decide if it would be better for me to buy a new computer system or build one. No question building it is the way to go!
I bought 2 250Gig Hard Drives on sale and we found the sound system, Video & Sound Card, mother board, processors & monitor for better than I would have gotten premade!
I'll have a wireless keyboard & mouse. A Flat screen 19-21" monitor, 500 Gig Hard Drive space, 3 Gig processor & 2 gig RAM! Plus we are getting the top line Sound & video cards!
Now for the money to roll in so I can get it all!