Nope. There are a few workarounds. I've chosen this method in my conversions:

Code:
ret = myfunction(string1, null, string2)
function myfunction(arg1,optarg1,optarg2)
    If IsNull(optarg1) Then
        'do nothing with it
    Else
        'do something with it
    End If

    If IsNull(optarg2) Then
        'do nothing with it
    Else
        'do something with it
    End If
End function


You'll also want to review the Include2() function as vbs has no method to import externals like kix's call. I think it's in v1\library\vbscript\general
_________________________
-Jim

...the sort of general malaise that only the genius possess and the insane lament.