I have problems starting my old third reich -game from avalon hill. I have understood all the others are playing it with minor problems!

When I try to start the game I get error message:
"Error : Can not find *LASERLOK* CD_ROM in any drive"

Commands I have tried are as follows:
mount c c:\3r
mount f f:\ cdrom -ioctl -usecd 1 -label THIRDREICH

I've been trying to read intructions and use different variations of the cdrom mount, with same results. I can list contents of mount c and f with dir -command.

My DOSBox vesion is 0.65
For third reich I have patch 1.38

Computer:
AMD Athlon 64 Prosessor 3400+
Windows XP SP2