donnar: Welcome to BC, a very cool place. I'm a lightweight around here, but until one of the heavyweights jumps in, here are some things to try.
1) You (or someone) may have disabled AutoRun, either on purpose or by accident. I disabled mine a long time ago because I don't want the machine to do anything until I tell it to. Go here
for instructions on how to disable (or in reverse, enable) AutoRun.
2) But just to try to get your printer CD running, you can insert the CD then start it by going to Start>Settings>Control Panel>Add/Remove Programs and then click on the "Install" radio button @ the upper right.
Please post back and let us know about your progress.