Been a while, but a new version of the combat simulator is out - you can grab it here:
http://www.geocities.com/saber_marionette_cherry/
It fixes a bug that has made attack-defense rolls wrong since the last version
Sorry about that! It was a result of a speed-up tweak, and I don't know how it slipped by my QC, but somebody noticed it and emailed me about it. Unfortunately, I forgot who, but thanks, Mr. Mystery person!