I am still trying to nail down my settings, but I used this link, http://community.landesk.com/support/docs/DOC-9526, as a reference.
Pay close attention to the first image, as this is the area that I was referencing earlier.
I only showed what I focused on in setting it up. The post still looks like it is valid, although at the beginning it shows as deprecated with 9.0 SP3.
Hope this helps,
Scott