[Zope] Newbie question: HTTP variables

[Dean & Deb Ekstrand]

I'm trying to figure out Zope (on a time crunch, too), and I'm wondering how
to do something.  How can I access HTTP variables in my DTML code?
Specifically, I want to return code specific to the user's browser.  I know
that HTTP has provisions for determing browser version, are those accessible
in DTML and how?  If they are not accessible in DTML, is there a workaround
(without oodles of javascript)?

Another quick question:  I see that Zope 2.3 will have "Script" objects.
What's the closest I can come in Zope 2.2.5?

Thanks,
Michael