True but I gather that your mounted blindwrite image isn't working.
Query, did you install the game from your original cd or from the mounted image?
If from the original cd, I suggest that you uninstall the game and then re-install from the mounted image as many safedisc protected games will run only from their installation drive. [Note: you can also edit your registry and achieve the same effect but I don't recommend registry editing unless you know exactly what you're doing and are comfortable with the risks involved.]
If the game still won't run from the mounted image, I suggest that you try a different program to make the disc image for mounting (e.g. alcohol) and try with that.