Assimilation for PC - Help!

Hi - I am trying to get Assimilation for the PC to run on my Windows Vista system. It installs fine but once I get into the program it asks for the disc even when the disc is in the drive. I don't know where to contact for tech support. I've tried to go to Global Star's website (their logo is on the disc) but I'm redirected to 2K Play and I tried to contact them - they say that it isn't their program. I tried to contact the manufacturer of the game - Small Rockets and they said that they don't support retail releases of their products. I don't know if there's a patch somewhere or not. I even tried compatibility mode with no success (maybe I was picking the wrong settings). I would really like to get this working if possible. Any help anyone could give me (even with ideas of where to go to find the help) would be *greatly* appreciated. Thanks for your time.