Questions about my audio interface?

I have the fasttrack pro usb audio interface which comes with a cd to install the interface driver software, which i apparently cannot install because im running windows 7 which wil not allow the installation of unsigned drivers. Yes i went to the M audio website and installed the win7 drivers from there no that did not solve the problem. nor did any of the other FAQs on google. SO, my queston is can i still use the audio interface without installing the driver software on the M audio CD?? i use Cakewalk and Magix