Form Hangs when called from an eventhandler.

[SonOfNel]

Hey folks, I'm creating a program that will listen for a new file created in a specified directory. I've created a FileSystemWatcher object named watcher that does the job just fine.
I then added an event handler for that object

AddHandler watcher.Created, AddressOf onChanged

Public Sub onChanged(ByVal source As Object, ByVal e As FileSystemEventArgs)
frm.show()
end sub

When I try to show the form "frm" it hangs. the frm form shows up, but has no controls and is not responsive.

If i replace the code with
frm.showDialog(), or show a messagebox it works fine, but halts the main form.
The main form needs to continue running and updateing the "frm" form with new info.

Please someone help.