accessing embedded windows forms control

[berek]

Is it possible to access a method of embedded windows forms control
from code-behind code (not from javascript)?

I have UserControl.dll embedded within <object> tag and i would like to
pass to it some information from within Page_Load() handler..

And maybe it is even possible to call somehow the constructor of
embedded control (passing some parameters)? The <param> tag won't help
me cause i don't have needed information by then (Request["param"]).

Thanx in advance for any help,