Open a MDI child form from another child form

Hi,

When I am trying to open a child form from another child form, nothing is showing up.  My code is like this:

1.    Dim Child1 As New frmChild1

2.    Child1.MDIParent = frmMDI 

3.    Child1.Show()

If I remove the line 2, the frmChild1 is opening outside the MDI form.  But I want a child form instead of modal form.  In VB6, I can simply run the following code to accomplish this task:

Load frmChild1

frmChild1.Show

Please help.  Thanks