Building your own PC is a much better way of doing things, not only is it cheaper, but you get to pick what parts go into your comp.
But anyway, that PC looks pretty good. Although you\'ll need a new video card soon. GF2 MX400, ugh.
My current comp:
AMD Athlon Thunderbird 1.4ghz
MSI K7T266 Pro
256mb PC2100 DDR RAM @ CAS2
nVidia GeForce 3 Titanium 500
Creative Sound Blaster Audigy Gamer
Microsoft Intellimouse Explorer 3.0
Microsoft Internet Keyboard Pro
Some crap monitor
Cable modem
Soon I will be upgrading to:
AMD Athlon XP (Thoroughbred)
or I might hold out a bit longer and get a ClawHammer. But those won\'t be out until the beginning of next year. I can\'t wait that long.

An extra 256 RAM
Somewhere along the line, a GeForce 4 Titanium 4600
Some more/better fans (running at ~140 degrees farenheit at the moment :/ )
Another hard drive