Your code example works just fine for me in VBScript.

But in VB.NET you could either use the system array, like this:

Dim cfg_media_types_array() As String = {“CD”, “Floppy”, “DVD”, “Other”}

Or you could take advantage of the other collection classes from the framework such as ArrayList: http://msdn.microsoft.com/en-us/library/system.collections.arraylist.aspx.