Rules, Content Profile and User Reference

I am using the Content Profile module in order to assign users from a "Sales Rep" role to users in a "Dealer" role. I'm then using Rules to send email notifications triggered on the creation of certain node types. What I'd also like to do is be able to tell Rules to send that email to the Sales Rep associated with the author of the node. Is it possible to use Rules to send emails to this Referenced User using this method? I'm unable to get it to work. I know it will work if I add the user reference cck field to the node type itself, but I need the Sales Rep assigned at the user level. Any direction? Thanks.