Wow, thanks for the responses guys. It's nice to see that there are at least a few people still interested in ACW gaming. My dad and I tried Fire and Fury several years ago, but found its complexity really took the fun out of the game.
I actually used left over 25mm figures from our FnF excursion for the initial play testing and they worked out fine. You could use whatever scale you want, which would allow you to use those great Perry figures. I opted for the 15mm Stone Mountain figures due to the increased variety. I've written additional special rules that allow players to field iconic ACW brigades -- the Irish, Iron, Stonewall and Texas Brigades, plus Zouaves and Tiger Rifles -- that just aren't available through Perry.
I've recently posted some new pictures in my gallery for your perusal. Even painting to just a rapid tabletop standard, I think the 15mm figures give enough opportunity for detail without driving yourself crazy. As Kilkrazy pointed out, it didn't take long to realize that some homemade movement trays would make life much easier. You may notice some "frosting" on some of the trays, which is the result of a spray varnish catastrophe. The moral of the story is: shake your spray cans THOROUGHLY!
http://www.dakkadakka.com/core/gallery-search.jsp?u=43780
As for a download of the rule book, I'm in the process of redoing some of the books' graphics. Hopefully I can get it squared away and uploaded in the near future. The thing just keeps growing. It's already up to 50 pages, with an attached expansion for the use of cavalry.