Can anybody help me with this ->

I have three forms:

1.MDI Parent (Master.vb)
2.MDI child (Customer.vb) &
3.MDI child (Orders.vb).

On MDI Parent i have a panel (just below the menubar) which has the following buttons:

1. New
2. Edit
3. Save
4. Delete
5. Undo
6. Redo
7. First
8. Previous
9. Next
10. Last
11. Search
12. Print
13. Close

Now my problem is how do i determine the active MDIChild and control its data with the buttons located at Master.vb panel ? (Any help with codes would be great!)

Me = MDI Parent
RecipeViewer = MDI Child

On Button Click event :

RecipeViewer.MdiParent = Me
RecipeViewer.Show()
RecipeViewer.BringToFront()