So the reason I was asking, There always is one.

is I was stuck down route the other week for 4 days. And in order to stay out the bar for a few hours the skipper and I went to the local internet cafe and played a few games. As the mac is not a renown games platform (we are about 2 years behind PC games on release.) I was thinking of putting together a stand alone games PC. for games like the new Rome:Total War. Besides which it would be something disposable for my young daughter to bash around on without jeopardizing the lovely apple laptops I have
The min spec is a 1Ghz Proc, 256 Ram and "reasonable" graphics card. So any suggestions on something a little bit better that meets those general criteria and is not expensive please.
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The Mac user mafia will have my guts for this so dont tell anyone