I have found in the past that sd4hide may not work as it should the first time! After choosing 'hide' in sd4hide you go to start the game and you will recieve the "Insert CD" message but if you go back to sd4hide and choose 'Restore' then 'hide' again then it will almost certainly work.
I cant say this will definately work with cmo6 tho as I dont have that particular game. But its worth a try the second time just to make sure.
