I figured it out. Here is the code for anyone who might stumble on this:
Code:
Private Sub UserForm_Initialize()
Dim myFont As String
'Set fonts on controls based on version of Excel
If Application.Version > 12 Then 'this is for Excel 2010
myFont = "Chiller"
Else: myFont = "Arial" 'older versions of Excel
End If
'Set the various controls
Me.Label1.Font.Name = myFont
'etc