I just bought an iMac 800 Mhz, 512 ram with the 17 inch LCD monitor from a surplus college sale. I bought it for my sister. The college formatted the hard drive and installed OS X 10.2 on it. I have updated it to 10.2.8. However, whenever I try to install any software, e.g. OS X 10.4, or mac-compatible games, the computer reads, "There was an error installing the software". The DVD drive works good because she watches DVD's on the computer. Just when installing new software, it starts installing, gets pretty far into the process, then brings the error message up. What do I need to do to repair this problem? Thank you!
Thank you for your response. It's been a busy weekend, but what I'm going to try first is the external DVD drive (if I can find it in the garage

) and then try to the firewire between my Mac and hers. I appreciate your help and am looking forward to reimbursing you for your help.