[Artificial]

I ordered some parts to build my sister a computer, but this will be my first time messing with a MicroATX case, and the included power supply is only 200w. I got her a 2ghz AMD, ATI 9600pro and Sony dvd/cdrw combo drive. Seemingly everything else she needs at the moment is intergrated, so will 200w be enough or should I seek out a better PS? Thanks for any advice