If you are running Windows XP:
1. Right click My Computer and click properties
2. Select Hardware tab, and click on Device Manage
3. Expand "IDE ATA/ATAPI controllers"
4. Normally the CDROMs are installed on the secondary IDE so double click on "Secondary IDE channel"
5. Select the Advanced Settings tab
6. In the device you have inserted the CD, Select "PIO only" from the transfer mode.
7. May require a restart
Hope that helps!
Home computers are being called upon to perform many new functions, including the consumption of homework formerly eaten by the dog.