Here's something to get you started.
I found the following code here, just slightly modified by me to Not Return warnings/errors.
Public Function GetTaskbarLocation() As String
Dim bounds As Rectangle = Screen.PrimaryScreen.Bounds
Dim working As Rectangle = Screen.PrimaryScreen.WorkingArea
If working.Height < bounds.Height And working.Y > 0 Then
ElseIf working.Height < bounds.Height And working.Y = 0 Then
ElseIf working.Width < bounds.Width And working.X > 0 Then
ElseIf working.Width < bounds.Width And working.X = 0 Then
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
That should get you the location of the TaskBar.
.After you locate the TaskBar, just load a Form in the appropriate location of the Desktop and call it a day.