How do we configure?

There is a tool called xorgconfig try to run it.

It wasn't found. Is there a package to install?

I'm willing to give it a try, but what I'm trying to do is get the pen to only be active on one of my two monitors, and I'm not sure what I'd have to put into the config file to get the right effect.

I couldn't find an xorgconfig package either. Here is a trick to search what's available in the archives though:

$ apt-cache search xorg | less
   ... -> will return a ton of results.

$ apt-cache search xorg | grep config
  ... -> let's see only the results that contain config in them.

Good luck with the xorg configuration though. I've been able to get things to work, but it's kind of a black art. When you figure it out, let us know how you solved it?

This might be of some help https://help.ubuntu.com/community/TabletSetupWizardpen