Orangic groups and CCK - send certain content type to certain group by default?

I'm working on an intranet using Drupal, and am setting up some project management features. I've experimented with Storm and Casetracker, but right now it's looking like I'm best off rolling my own with a mishmash of other modules (i.e., I need multiple sorts of tasks with very different fields, and both Casetracker and Storm look more like they want all "tasks" to have the same components, even with some being optional).

So, at the moment, I've set up a custom content type using CCK (named "Project Request Form"), and a group for the department who will need access to the Project Request Forms.

All users of the system will need to be able to submit a Project Request Form (and edit/add to their own later). All Project Request Forms go to this one department (set up as a group in OG - all group members will have access, although an admin for the group will assign tasks, based on certain requirements, to a user). At the moment, there is an item where users can choose which group to submit this to. This is problematic for non-technical users, because we all know how poorly people do with essential fields that aren't systematically required. (Nevermind the fact that the department these go to used to start with the word "Public," and mass confusion may ensue.)

There must be some way to force Drupal to automatically put all Project Request Form content types into this department's group, without asking the end user to do something. I just can't figure out how.

Help?