Perhaps this is what you wanted
Code:
Sub ChangeListFonts()
Dim aLT As ListTemplate, aLL As ListLevel
For Each aLT In ActiveDocument.ListTemplates
For Each aLL In aLT.ListLevels
If aLL.Index <> 3 Then
aLL.Font.Name = "Times New Roman"
End If
Next aLL
Next aLT
End Sub