While I game with Koenig's Krieg rules, and enjoy them ...
an awful lot of my cyber buddies are using "Battles of the Ancient Regime from

http://www.oldregimerules.com/
The price there includes postage at $37.00 American ....
These rules are designed to be highly flexible ... units can run from @ 24 to 60 men, depending on space available and your collection ... differing basing systems are considered with suggestions as to how to make your collection against the other guy's basing, and so forth.
Also, Bill is a nice guy.
And I don't say that just because he runs Gallia in the Elector vs. Emperor blog!
:)
Arthur