[DavidU (Dave)]

I thought I would ask the experts.
I need to replace my aging computer and wanted to kill two birds with the one stone.
I want to do astro imaging & processing and the kids will play games etc.
i7 920? Quad core extreme etc? I would get a 512meg video card etc.
Is Vista 32 bit ok or go 64 bit?
4gig ram or more?
thanks for any input