mark at ehle dot homelinux dot org wrote:
> Thanks - but I don't want the user to have to enter a username or 
> password. but just click a button.

Then don't use a username, and go with no authentication.

<form method="post" action="$PORTAL_ACTION$">
<input name="redirurl" type="hidden" value="$PORTAL_REDIRURL$">
<input name="accept" value="I Accept" type="submit">
</form>