Displaying multi-select list box using vbs

I currently have a separate vbs file that renames a file from a generic name to one that is sent with the arguments.  This is done within a DOORS template that creates a document   An example call to this script would be:
cscript "..\3 - Publishing_Scripts\File_Rename.vbs" "${Word}" "${Document_Select}"

where it uses the File_Rename.vbs function to change the name of the current file to the name in Document_Select.

Now, we would like to create a script that runs before the main template that will display a list of available documents they can create and automatically run the template for each document selected.
I will work out the code to run the template multiple times, but my first issue is much more mundane... How do I create a multi-select drop-down box within a .vbs file?

Chris