Danny, thanks for the quick response.
Where exactly do I place this PHP code?
In the template I want to read the query string in?
Again, many thanks for the help.
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Edit!
Let me be more specific:
I want to pass values for forumid's into the vBulletin page from a non-vBulletin page.
I was planning on stuffing the query string with the following:
www.mydomain.com/forumdisplay.php?f=1&c=2
...where f=forumid and c=calendarid
That way I can populate variables inside the header template for custom navigation.
Again, I appreciate any help.