From what I've learned around here, you would need Vista to do what you want, because XP has horrible multi-monitor support unless you use horizontal or vertical span (which requires one dimension to be equal across all monitors). What you need is "dual view" and only Vista can adequately handle 3D acceleration on multiple monitors in dual view. Once you have Vista, it's just a simple matter of plugging in the monitors to each card output (and making sure you DON'T use SLI).