If you have two pcs right next to each other you may want to check out multiplicity by stardock.. allows you to use a single mouse and keyboard on multiple pcs.. very nice.. I think they even just added mac support..
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-D Modifying and Tweaking is a journey, not a destination................................ MKIIa : 60gig - 040103286 - Blue - v2 + PCATS tuner MKIIa : 20gig - 040103260 - Blue - v3a8 + Mark Lord Special Edition Cherry Dock