I built a system for my neighbor about 1 1/2 years ago and now he's asking me to do another build for him (for his 17 year old daughter, he said her PC is old and "broke"), she's not a "first person shooter" type and no heavy processing requirements (takes digi pictures, but no heavy movie editting or anything).

I built him an inexpensive:
XP Home SP3
MSI K9MM-V mobo
AMD 64 X2 4000+
160g SATA
2gb DDR2
450w PSU
XFX GeForce 6200 / 256mb DDR2 / AGP 8x
all totaled it was under $400 (he had XP already)

he really liked it and wanted the same for his daughter. I told him I'd try to keep the price about the same, but he'd probalby get a better / faster PC for his money now than when I built the original.

quick search I found:
Biostar TA780G M2+ Barebone Kit - AMD

Biostar TA780G mobo
Phenom X4 9500
2GB DDR2-667
250GB SATA2
300w PSU

seems like a good deal, but I haven't worked with Biostar before, the reviews said the CPU was good, but there are faster dual-cores (!?!?!) for less money and the PSU seems a little weak.
(anyone want to weigh-in on the faster dual-cores?)

Any comments or better suggestions for his build? thanks
I wanted to keep the build around $300, because he still wants a 3.5 floppy (can't let go), front card reader, wireless network card