Can't see or use a Mavica CD on a Computer

Hello!,
Here at the office we have a Sony Mavica CD 350 as part of our employee and students ID card system. We take ID pictures and download to a Windows XP Computer using a USB cable in order to create the ID's. What we are trying to do is to see if we can take the CD's directly to the computer, open the CD and transfer all pictures to the hard drive. When we place the tiny CD on the CD reader we can't see anything. We have to use the USB cable to get the pictures on the computer's hard drive. What can we do in order to avoid that step? What can we do to the CD reader? Thanks for your help!