Originally Posted by skylin fisah
One of the install discs that came with your Mac has the installer for Classic on it. Try each disc, until you find one that has a package named "Install Mac OS 9 System Support" or something similar. This will install your Classic environment so you can run old OS 9 apps.
This is assuming you're using a PowerPC-based Mac. If you're using an Intel-based Mac, the above advice will not apply. In this case, you're screwed.