Wow! A fantastic update by Craig Goley.
Lots more details in the .zip file. It's still works on MS Excel 2003, so you don't need to shell out for a new version yet. :)
And for those that have read the help in there, I've since turned off the beer link, since I no longer keep this updated. But hey, you can click on an ad link once in a while.
Without further adieu, the Mob Wars Calculator Version 3.3