PHHBiomed

Hello all. I hope I have not missed the obvious, but I can't find the answer to this one. How can one change the drive on which Sonic stage (V3.1) is installed, and /or where encoded files are stored? I have a 200GB HDD with a 20 GB C: and 180 GB D: partition. I have the full installer on my local drive, and when it installs, it defaults to C:, with no option of installing to D:. As I have only about 6GB free space on C:, I don't want to store music there when I have a big partition for that purpose. I would like to install the application, or store data to D:. Is this another shortcoming of SS, or have I missed something? Cheers, PHHBiomed.