Hello and welcome to InfiniteMac forum board.

Yes, you can run OSX on it and pretty well, i am sure. Which distro? well you can pick from many of them, i'd suggest installing the one with latest version of osx and they all cover full variety of chipset and other drivers. I am not sure if DualCore can handle vanilla kernel, i think not, so you will use the latest voodoo kernel which is also great. You can check on osx86 wiki HCL, hardware compatibility list, to see what the others said about yours or similar aspire models. IMHO, as your graphics is supported, chipset also i think, you can just pick one of the latest distros and you'll be great. Later on everything will go one step at the time :-)

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