Mike, I don't know the exact answer to your question, but want to welcome you to the group.
I can tell you the word here on the forum is redirector is flakey. Even if you get it working the odds are probably that you won't be happy with it. See what others say. And see blackberry.faq on methods of receiving email on the blackberry. If you have BIS and your work email can be accessed from the internet, BIS internet email may be an option for you. See what others here say.
EDIT: Methods of Receiving Email on BlackBerry - BlackBerryFAQ.com