This looks interesting.
All one would do for low power is unlock the multiplier on a Athlon and it could run pretty well.
Better yet, if you have money to blow, get a T-Bred on the new .13 core, unlock the multiplier, and lower the clock speed quite a bit. This should run cool and draw a hell of alot less power than the XP .18 chip.
If they were selling 1GHz Athlon (Not Duron) with 145watt supply's at microcenter, than an underclocked tbred should be awesome. Looks like the PCPower 100watt supply might do just fine after all...
$59 for the mobo, cheap shipping, built in VGA RADEON 7000 with S-VIDEO and COMPOSITE. Sounds temping. Even though it is a Micro ATX mobo...