Dont waste your time looking for it.
D.O.T. on MSI is just Overclocking Presets you can choose and try. You can find them on Video Properties on MSI CLOCK part. It begins with Private and ends with Comander, higher the rank Higher the OC rate. Wich MSI dont tell is how stable will your video Card be depending on the rank of DOT and i dont think they'll warrantie if you burn your card by setting it on Comander. What you can do is to begin with private and keep trying with higher ranks (till you burn it
, J K) while you check the temp on the card (with the Turbo Experience Software that came on your drivers CD), and the stability for shure.
I have an MSI Ti4200 but DOT is not enabled, i just increase the core and mem to a Ti4400 (or 4800SE) and its working very Fine ( its a 25mhz increase).
So, you most try....and dont get influenced by complex names on simple things.