[propbeanie]

It does work, but you have to edit the batch files to match your game's path. Also, dependent upon which OS you use and the way things are set-up between it and Steam, you might have to add the games to the Steam Start menu, and use that to start the game, allowing it to go through the Steam licensing check. You can also then create desktop short-cuts in Steam, but you do have to change the batch file to reflect, as an example:

"D:\Games \Steam \SteamApps \common \Silent Hunter Wolves of the Pacific"

so the CMS can find where your game is. It is probably easier to just create your own "archive" of the Steam install of the game with 7-Zip or WinRAR, as it is to create one with CMS, due to the Steam folder structure...

Generally speaking, it is best to leave the original Steam install (outside of the Program Files folders, of course) alone, and just make copies of that, placed in new folders of your own naming in that same "common" folder, and mod those...