Is there a way to give user points on signup for a node?

I want to use the points module to give points for signing up for nodes (signup for volunteering for a shift, to provide supplies, or to be participant in a panel session at a conference). The members can use the points for the "volunteering" as discount in Ubercart when they pay for registration to the annual conference.

I saw that you can use a hook_form_alter() to do the opposite at the post http://drupal.org/node/376087. Does anyone know how this could be accomplished. Integration with user points would be a great feature for this module.

Thanks in advance. I'm looking through the other User Points contrib modules right now to try to figure out how to modify them to create one for Signup, but I'm not a developer.