oh, so ur budget is $400, that makes everything much clearer, here is ur list........
Opteron 144, its about $170 or something
Western Digital Caviar 250GB, around $100
ThermaltAke Soprano, or Antec Sonata, which is no more than $80 or something.
yeah, i dont think $400 is enough.....hmm....well...ur gonna have to go with like a sempron or something, and a cheap *** case......cant skim on a PSU, so that would be an Antec of some sort, and ram cant be 2 GB.....wow.......new list......here it is
AMD Athlon 3200+, it overclocks really welll dun wry and is $100
http://www.newegg.com/Product/Produc...82E16820220006
its a patriot 2x512MB, and has great ratings, and is $88
http://www.newegg.com/Product/Produc...82E16822144416
$75, a good hard drive
http://www.newegg.com/Product/Produc...82E16824224007
has good ratings, and is fairly cheap $150 about
http://www.newegg.com/Product/Produc...82E16824224007
a good cooler master case
total is about $460, a lil over ur budget, but a great one nonetheless.
EDIT: btw if u also need a power supply, then the
http://www.newegg.com/Product/Produc...&Go.x=0&Go.y=0
is $65, so it would be $100 above ur budget, but thats IF u need the power supply......*sigh* hopefully u dont.