[Zope] getting Apache's UNIQUE_ID into Zope?

I'm currently converting an application from php to Zope. My app uses Apache's UNIQUE_ID env variable. Zope is running behind Apache with mod_rewrite and mod_proxy. Is it possible to pass the UNIQUE_ID variable in the rewrite rule so I can do <dtml-var UNIQUE_ID> in zope? thanks -Kevin __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/