Is it possible to set up a specific DO NOT RECORD match?

It is not.

One of the best, and most often overlooked features of the TiVo software is the "View Recording History" selection in the "To Do" list.

Not only will this tell you why TiVo didn't record programs you thought it would record, it tells you why TiVo is not going to record programs you want for two weeks into the future, allowing you to resolve conflicts.

tanstaafl.