After several tries and lots of frustration with the software that came with my cable from OBD2.com, I came across this program...

http://www.roadraceengineering.com/obd/obdtool.zip

I believe Mike said something about it being unsupported, unlicenced, and youre-on-your-own... but it works GREAT for me.

Other useful links:

http://www.obd2.com/Downloads.htm

http://www.obd-2.com/

http://groups.yahoo.com/group/DSMtuning/

http://www.OBD-OnBoardDiagnostics.com/products.htm

http://members.aol.com/carpix256/pages/tcode.html

Happy tuning