If you add an EventLogInstaller to the installer for your app, you can add
an event source to a custom log. The event source name is all you need from
then on - Windows sees that that event source is a member of the custom log,
and any events logged with that source name will get stuffed into that log.
And make sure the installed event source name matches the name in the EIF
config file.

Hope this helps!
-Andy Hopper