Sorry man, I don't have my Maya machine untill the weekend of October 10th

(don't ask)

You CAN email the Arete team of support staff, as they are pretty quick in getting back to folks I've heard.

Personally, I've got no use for DNT, and even Digital Domain says that the DNT renderer is WAY too slow to run decent enough on a single machine.

If it is a plugin demo that you downloaded, double check these basic plugin troubleshooting tips first:

-is it only written specificly for Complete or Unlimited? ..or both?
-which version of Maya 5 do you have? (Uln, Compl, PLE?)
-It will not work on PLE most likely.... just fyi
-make sure the plugin appears, and is loaded in the plugin manager.
-could there be an OS conflict issue? (98, XP, 2K, Mac 'only' etc?)

just shooting in the dark here....