[Apollo_13]

Just right click on your game folder,and rename the folder

Then,run your DVD and uninstall IL-2,and then re-install IL-2
It will not effect your renamed game folder

Then you will have the new game,patch and install how.what you want
whatever version,mods ete

and .... your other renamed folder
just go in the renamed game folder,right click on .exe and create a shorcut/then rename the shortcut... then paste to desktop

You now have two IL-2 games