Yeah, probably the cheapest by quite a lot. The only thing you have to watch while building a PC is jumpers, or at least that's what I really had to watch (and it worked the first time around!). Just read all the instructions on everything, and you'll fare just fine.
Oh, and about the video cards...people are right that you need a good one, but in reality an x800 is not worth it at all if you don't game. I'm running a radeon 9600le, which people say is crap, but I can run Doom 3 at 1024x768 without a glitch so you make the call there. Note though, this could be due to my 2 gigs of ram and 3500+ processor....but just proves vid card is not everything.