DVD drive/HD conflict?

[japps]

help...I have a Raptor HD and a Plextor 712 DVD-R. the problem is most of the time when I change CD's in the drive, it will not recognize the new CD...it gives the old tags and files for the CD I just removed. It also forces me to remove any CD's from the drive to initially boot up (Game CD's primarily). The HD is a SATA and is defaulting in the Bios as Master #3, and the DVD is by default coming in as Master #1. the Bios won't let me change this.

system specs:
AMD 3400+
1 GB Ram
MSI k8N Neo MB
Nvidia 6800 GT video

 

[LegendBreath]

Jumpers maybe?