Feel free to download, use, & modify/trash the spreadsheets at my site. Power attack spreadsheet calculates the best power attack values for full attack damage/round maximization against a range of ACs, parameterized by the wielder, weapon, and opponent. Only for non-Epic characters so far. 3.5e. Have advertised here before (not implying anything commercial) and felt current update deserves special mention. Fixed the Paladin and Monk class feature calculations. Incorporated Speed and Burst weapons. Mess around with it, it's pretty cool in a mathteam kind of way. Sorry about the data transfer issues with GeoCities; things should cool down to just a couple hits/day shortly. Also haven't figured out how to tell Excel my spreadsheets no longer have macros, so there's still the annoying/alarming blurb about digital signatures. Here's the link. Maybe it's in my signature too.
http://www.geocities.com/frisbeet/DandDandFightin.html
http://www.geocities.com/frisbeet/DandDandFightin.html