Hi Vic,
Many thanks for pointing that article out. I am revising it for clarity now.
In brief: set up LUA 2.x on a server that can access the Internet, then configure it to supply content via a Distribution Center that is at a network location where the SEPM can reach it. Full details on how to install and configure this LUA 2.x program can be found in the documentation folder on the product DVD, though the link that Thomas provides above is a good start for understanding this tool.
Thanks and best regards,
Mick