Using switch

I've created a small templating/content management system for myself
and have a question about coding structure.

What I am basically doing is generating pages by populating one
template or another selected from a set of templates stored in a
directory with data stored in a database and images, some stored in
the database and some in directories accessed through inks in a
database.

The general structure I am using is a switch operator triggered by
"GET" data which passes various variables from the get data through to
the appropriate function that inserts appropriate data and images into
the appropriate template, adding selected CSS and javascript functions
as appropriate. The switch control data comes via the GET variables
and the switch operator directs it to the appropriate function.

I mentioned something about using a switch operator like this in a
previous post and someone said something that sounded like they
thought this was an inappropriate use of this operator.

Does anyone have a comment about this? If so, what is the appropriate
way to do this?

Thanks,

--Kenoli