Well, I found two ways to solve my problem. Here is the easiest. The form that is displayed on the newly created still has the ability to see public properties of the main form that created the thread. One of my properties actually references the main form, so in the created form, I can use the following code:

poMainForm.BringToFront()

It was as simple as that; however I could have used the following Windows API call:

Private Declare Function BringWindowToTop Lib "user32" _
(ByVal hwnd As Long) As Long


' Bring the window Form1 to the top of the Z-order.
Dim retval As Long ' return value
retval = BringWindowToTop(poMainForm.Handle.ToInt64)

This was written by Paul Kuliniewicz and came from the website http://www.vbapi.com.

I hope this helps someone else.