Dakkon426 on the FFG Dust Tactics fourms has taken the time to make an army builder. Currently it requires Windows 7 but it looks really nice go on his blog to download it.
If you have any problems you'll have to contact him I can forward it to him but I would prefer you contact him.
In the mean time I am also working on updating the Army Builder files to the Army Builder program from Wolflair. I'll make an announcement when they are done.