You can read my specifications in my signature.
I suggest you to get a better graphic card and a dual-core INTEL processor.
You can go with the same motherboard, because the drivers are easy to find and almost always included in the distros.

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FIJUTSU LIFEBOOK AH530-GFX
Processor: Intel i3 M370
Graphic Card: ATI Mobility Radeon 4650 1GB
Operative System: Windows 7 Ultimate & Snow Leopard