Try
www.KREX.COM they have reasonable prices and they deliver. I just purchased a desktop P4 3GigHz 2Gig RAM, ~$780) from them and it comes with everything you need (Onboard Video, DVD recorder) to get started. You can always upgrade at a later time with some of the other options, and use your current installation disk for the OS(-$90). Try Yahoo shopping for a monitor. I picked up a 21" Viewsonic LCD for $535 so for a total cost of $1315. I picked it up as I live in the area. Shipping will be extra. Check it out, you have nothing to lose.
