Not sure if this will work (i'm not near a design environment), but I think that an MDI child form has a .left property. If so then use this code to align it to the right of a MDI form

Private Sub AlignChildFormRight(vChildForm as form)
vChildForm.left=MDIForm.Width-vChildForm.width-100
End Sub

This should align to the right, although you may have to change the 100 at the end to get rid of scroll bars if you don't want them

Cheers

Chris