@ JScones
Yes, very simple to use & no need for the App Com tool. Also, if you need to test different resolutions, all you need do is Alt+Tab from game and make the adjustments in the cfg, then go back into game and the changes take straight away.
@ IrischKapitan
You need to add your own save destination for the screenies. IIRC, open the d3d9.cfg file and look for the screenshots=. line. Just add your own folder destination.
EDIT - Beaten to it.