Catching events

Hi. I want to use a treecontrol which I create dynamically by doing
set Mytree = Usercontrol.Controls.Add("MSComctlLib.TreeCtrl","someid")


Then I want to access its Expand, Collaps and clicked events, so I've Dim'ed Mytree like Dim withevents Mytree as VBControlExtender


Now I'd very much like to catch the events in my Usercontrol. How do I do this?
Yours sincerely, Niklas