Just about the only thing that didn't make sense in their $500 build was the $100 power supply. It was a pretty good article and says what it is supposed to.
The PSU is one thing you cannot skimp on. I always buy decent $99 PSU's, even if I get one at a sale price at Fry's for around $59 to $79. Budget or not, a bad PSU can ruin a good system.
---------------
Athlon X2 4600+ MSI K9AGM2 690V 2 gigs Kingston DDR2 800 MSI 3870x2 850/901 100 gig Maxtor SATA 2x 160 gig WD SATA 400 gig Seagate IDE Memorex DVD R/RW Antec Neo 650 PSU Antec Nine Hundred case.