With Newegg, you'd have to build it yourself.
I like AMD processors for lower-end builds, mostly because of the three-core processor option...and here's why.
1) AMD motherboards typically have a lot more value-oriented features (their onboard graphics are the best, bar none).
2)For the price of a two-core Intel processor, you can get a 3-core AMD.
The 3-core AMD will, with old games, work great, and work pretty well with newer ones too...but here's why I prefer it.
The base user who uses a computer for word processing, email, web browsing, listening to music, watching movies, and the like, doesn't need the highest straight-line speed processor...they're much better off with a processor able to handle more things at once, because it doesn't take too much power to open firefox, or microsoft word (or
OpenOffice)...the most demanding program you would probably run would be an anti-virus scan.
That, though, will typically use two cores to scan things...so, having a three-core processor means that your single core applications will run fine during a virus scan.
Plus, you'll encode music and videos faster, if you do that sort of thing, and you'll see a speedboost in photoshop as well.
I deliberately tried to keep the price low, though, so that you could potentially pay a friend to put it together, or so that you could buy an operating system, should you need to.