A question about downloading drivers from the internet.?

I was given a Casio WK110 76 Key Portable keyboard with USB/MIDI connection, making it capable of connecting to my pc. It also came with a CD which I'm uming contained the program allowing you to connect to the pc.My problem is, when I loaded the CD, it's damaged, and wont load. My question is, can I download a driver for my keyboard off the internet without having to pay for some program? Thanks. Hubb