is there a way in outlook 2003 or 2007 where you can create a rule that will allow the assignments of expiration dates based on an identifier(i.e. sender)

ok, if you open an email and you go to view->options you can check the "expires box" and set a date. What i was wondering is if you could write a rule in outlook that would allow you to do this.

ok that is what i thought. do you know of any good sites that possible might have a script for this?