I'm new at this and people are screaming already at me dorks! Can someone help me setup a policy to allow Yahoo Messanger on out BB 8700c.

Using BES 4.0 with Lotus Domino. I read a blurb on Importing cuton IT policy rules on a Yahoo policy sheet that says Cutson IT policy rules in the Service Exclusivity Policy group cannot be added to
BES for IBM louts notes.
Am i screwed on this?

I would create from scratch but having the dickins of a time trying to find out how. can someone help me cheat on this one? where do i begin?

thanks
G