I revised this from a post from Bob Kilmer on May 20 2003, 5:44 pm for
textboxes
Private Sub ComboBox1_KeyPress(ByVal KeyAscii As
MSForms.ReturnInteger)
KeyAscii = IIf(IsNumeric(Chr(KeyAscii)), IIf(KeyAscii > vbKey0,
KeyAscii, vbKeyBack), vbKeyBack)
End Sub