Session Variables

(I think I may have asked before but I know I didnt get an answer. If so, Sorry for the repost.)
Is there a way (with out 'Global.asa') that I can cancel out a users session (technicaly I just need to wipe out thier session variables) when they click a button or trigger an event? I do this at another point in the project but that is just in a small routine where they create a few session vars that need to be reset, This is a very large project that I would hate to go through to find all the session vars and set to "" :)
Thanks in advance,
Michael

A new feature of IIS 5 is:

PHP Code:

---

<%Session.Contents.RemoveAll()%> 


---

It should also work for Application.

works great :)
thanks,
Michael