Using my immense google-fu, I found this: http://armamanager.codeplex.com/
Which looks rather useful, but would require some changes to the Windows box hosting our Arma II servers (some minor IIS stuff, documentation/instructions are here (http://armamanager.codeplex.com/documentation)).
Would a kind server admin have a quick look, and see if it's possible to have this set up on our box?