Can the default be centered on Form Combobox list?

[SteveInAlabama]

I am using a Form which has a drop-down style Combobox. The Combobox's list is loaded via VBA, with 20+ items.

I am using the code below to highlight the default value for the list, which works fine: (for some reason, the method header is turned to asterisks, so use the Rem'd line to finish the line.

Private Sub cboxItemDescr_DropButt*******()
   ' ******** above = DropButton_Click
    If Len(cboxItemDescr.Text) = 0 Then
        cboxItemDescr.ListIndex = iDefaultIndex
    End If
End Sub

What I need however, is that this default shows mid-way down the pull-down list, not at the top. So for example, my screen shows eight of the 20 items in the pull-down; but the default is at the top whereas I want it to be in position 4 or 5 in the list. Can this be done?