I've started to post every single one of the famous George Nafziger American Civil War Order of Battle Collection at TOCWOC - A Civil War Blog on a dedicated page. George has retired and no longer charges a fee for their use.
I am happy to announce that due to recent agreements with Scott Mingus of Charge! and Ivor Janci of Zouave, I have begun to post Charge! and Zouave scenarios which feature the Petersburg Campaign (and in some instances the Bermuda Hundred and Appomattox Campaigns) in the "Wargaming the Petersburg Campaign" section of my Petersburg Campaign web site Beyond the Crater.
Look for more scenarios soon. My ultimate goal with the "Wargaming the Petersburg Campaign" section of the site is to collect as much Petersburg Campaign wargaming material (miniatures, board games, and computer) as possible, and this is an important first step.