Activating DMA for DVD-drive under Windows 2000 Prof. on T21

[HB10]

I got two optical drives on my T21:

-Teac DW-224E CD-RW/DVD combo
-Matshita SR-8175 DVD (in ThinkPad Dock)

Both are attached to the secondary IDE Controller.

I already activated "DMA, if possible" within the hardware manager. Still I only get the PIO mode for both devices.

Unfortunately I can't find any specific drivers for the TEAC or Matshita, so I go to use the standard ones of Microsoft.

Has anyone got an idea how I can get the DMA mode activated?

[level]

You can try this utility from Dell:

Here

I've used it on a Sony so I know it works with others beside Dell.