Treeview With Textbox Controls

i am trying to adapt this code to show userform textbox's instead of cell information

Sub treeview()
Dim i As Integer
Dim nodX As Node
Dim strRel As String
Dim strRship As String
Dim strKey As String
Dim strText As String
Worksheets("sheet1").Activate
Range("a3").Select
For i = 1 To 3
'cell A3
strRel = ActiveCell
'cell B3..................

which i found here, fileTreeview control.