I figured out this way, but it's kinda tricky. (It doesn't always work at once, sometimes it does and after you have left the game and try to restart it, it doesn't work again in the same way as before. You have to alter some things - I explain that below.)
So, get Pr0t.St0p and the latest versions of Deamon Tools and SecuRom Loader.
Now it's about altering the order of the following steps:
- Start Pr0t.St0p and click "hide" (and "restore" when it didn't work).
- Mount the *.mds of the original image or of the mini image. (The *.mdf might be worth a try as well.)
Last steps:
- Start SecuROM Loader and select the C4EXEC.exe in the game directory.
- Hope that it works.
Don't give up and keep trying.
PS: My virtual drive is BEHIND all the other drives.