I have the Frozen Throne mdf file on my HD -565MB. However after mounting the image with daemon 4.00HE is still give me an error that tells me to please veriffy that the disc is in the drive. After asking my friend to help me with this problem, it started working. However, I did not pay attention to what exactly he did and he is out of country for the moment. I remember it had to do something with tweaking the registry but I have no idea how to do this. Anyways, the game worked for a good two months w/o a CD until today when I decided to unmount the mdf file and start playing Oblivion. Now when I try to play Frozen Throne, it gives me the same error asking me to verify that the disc is in the slot. Can anyone tell me about this registry tweaking thing and give me a step by step. Also I do not want to use Alcohol 120% as I am very computer illiterate and had a hard time figuring out how to use the program last time. I just want to run the game off my mdf file on my HDD and do not wish to burn a copy of the CD.