For Loop Combo Boxes with If Statement

Ok, so after some googling and trial and error, I think this is the class solution that Norie mentioned.. I don't fully understand this currently, but seems to work anyway.
To use this, you need to insert a class module in your VBA project -- right click > insert > class module

Code for userform module

'-- Userform code
Option Explicit
Dim ctCombo As clsCombo
Dim colCombo As Collection

Private Sub UserForm_Initialize()
Dim ctrl As Control
    Set colCombo = New Collection
    For Each ctrl In Me.Controls
        If TypeName(ctrl) = "ComboBox" Then
            Set ctCombo = New clsCombo
            Set ctCombo.Combo = ctrl
            colCombo.Add ctCombo
        End If
    Next
End Sub

Code for Class module

'-- Class code
Option Explicit
Public WithEvents Combo As msforms.ComboBox

Private Sub Combo_Change()
    If Len(Combo) = 0 Then
        UserForm1.Controls(Replace(Combo.Name, "mid", "mia")).Enabled = False
    Else
        UserForm1.Controls(Replace(Combo.Name, "mid", "mia")).Enabled = True
    End If
End Sub

Private Sub Terminate()
    Set Combo = Nothing
End Sub