Forum OpenACS Q&A: Re: is it possible to call a tcl proc from adp page ?

Expounding on Malte's suggestion, you can do this:

db_multirow users fetch_users {
    select email from parties
} {
    regsub (.*)@(.*) $email {\1 at \2} email
}

This changes the value of the email variable in the multirow and you would not need to run any Tcl in your adp.

In other words, @users.email@ would contain "ache9829 at mail.usyd.edu.au" in your case.  No Tcl needed.

Hope this helps.