I'm trying to do the same thing.
I'm a bit of a newbie with this, so I appologize.
With GTA:SA (game info below) I can make an image file using dvd decrypter (sp?). If I then use Deamon tools, I can install the image from a virtual drive. The installation goes well, but then when I try to run it, it tells me to insert the original disk.
Now, if I use the mini-image 'no cd crack' - and MOUNT that, it opens the game directory for me. (the image previously ripped with DVD-decrypt) and I get nowhere....
Actually now that I'm explaining it, I may have come up with a solution. Would browing to the game install directory and selecting the exe (with the mini-image mounted) run the game? Hmmm....
Perhaps if someone can explain the mini-image thing to me I might know if I'm on the right track here?
Here is the game info:
Game Title: Grand Theft Auto: San Andreas
Game Version: 18.104.22.168
Developer: Rockstar Games
Publisher: Take-Two Interactive Software
Region of Origin: US Retail