Exporting individual pages to PDF / Indesign

Have downloaded some sample scripts from

http://www.adobe.com/products/indesign/scripting/index.html

This is all well and all but it creates a document and prints it as individual pdf files. Yes this is what I wanted but how can I change the script to either let me browse for or call to my own already created .indd file?

Please help.

Thanks in advance,

regards,

jmituzas