Re: Reusing parts?
If it's 7 years old, it's most probably going to be IDE. I would really go for a SATA DVD drive. SATA is a little bit faster at 150 mb/s. You also get a smaller cable. That reduces the airflow in the case. It also makes cable management/the overall look in your case better.
2.13Ghz Intel Core 2 Duo-2GB DDR2 800 Mhz-500GB Western Digital Caviar Blue- Nvidia 9400M