Actually any folder outside the two "Programs" folders will do as well.
But Coop Maps are like SP maps and they aren't all finished so most likely you will have some that can crash.
Yes, I have it installed in my D:\ drive (C:\ is where Win7 is for me) and in a custom folder that is not the Programs Folder.
I still can't get online so have been playing a lot of Coop. Certain maps do crash - I knew this before - for example, Totalize, Lebisey and Cobra. Others run great, Mareth Line, Siege of Tobruk, Sidi Rezegh.
Before, I didn't know if it was the map crashing due to bugs or lack of RAM on my side. Now I know the answer - it's the map. My Event Viewer doesn't mention a memory crash of any kind as a possible cause but a faulty application - FH2.
Nothing is perfect and I know most if not all FH 2 users play FH 2 for PVP rather than SP. I just can't get online for some reason? When I click on a server in the list my game crashes to the desk top?