DWMX | ASP | ACCESS

I am currently working on a project where I need a data entry to timeout after 20 minutes. The format that I am working on is simple, i am asking a user to type for 20 minutes, after then twenty minutes is up I want my page to timeout and send what the user typed to a email address. I am having some severe problems in doing this, if anyone out there knows how to do this then I would greatly appreciate some help.

Robert Johnsen.