DVDRW and DVD-Rom Won't Read

I have a TDK DVDRW0404N and a Pioneer DVD-ROM. I have tried everything to get them working including uninstalling and completely removing them from my computer. I feel that I have changed the settings so much it’s a lost cause. The only one I have in my computer now is the DVDRW and it starts,but it won’t even read an installation disk. What is my next move? The computer runs good other then that.

 

what is your os (ie - xp, vista)? what does it show in my computer (are there any errors)? in xp, "right click my computer --> hardware tab --> device manager --> dvd/cd-rom drives

g/l, sos

 

My Syetem is :
Windows XP Professional Service pack 3
Shows mo errors
Hardware shows TDK DVDRW0404N Working properly
IDE Secondary DMA if available
Urta DMA Mode 2
Auto detection
Current Transfer Mode Not Applicable
Thanks for the help

 

Also:
Storage
Floppy Drive Floppy disk drive
Disk Drive Canon MP Memory Card USB Device
Disk Drive Disk drive
Disk Drive Maxtor 4W060H4 (60 GB, 5400 RPM, Ultra-ATA/100)
Optical Drive TDK DVDRW0404N