Mounting games on virtual drives

[liquidguy]

I have treid and failed to mount a game i downloaded. the game consisted of 4 discs, so i mounted each individual disc to its designated drive. the problem is that i could not get the game to get past its startup screen. I failed with DemonTools and Alcohol 120%. I gave up on instaling that game, so now i am faced with a similar problem, but this time with a game that reads as only one disc (FIFA '06). How do i use DemonTools to mount corectly so i can bypass the "Insert 1 DVD-Rom disc" note box?

Thanks in advance to whomever can assist me, thank you!