rookies question about one class uses another

[eluser]RcCluster[/eluser]
hi,

something i can't find:

i have two controller and two assosiated views. in each view is a form and i use the form class and helper in the controllers.

login.php -> login.tpl
showprod.php -> showprod.tpl

(yes i'm using smarty )

in login.php i compute if the login correct. after this i want to call the showprod.php controller to show the showprod.tpl form.

how can i do this?

thanks
RcCluster