[Google-Desktop-Developer] How to let GDS search files in specific folders at one go

Hi,

I'm using GDS Search API for Google Desktop Search for my application.
My application needs to allow user to specifc more than one folder to
search for results.

For eg; i need to search for files that contain "harry potter" in both
"C:\Program Files" folder and "C:\Windows" folder and have the results
returned by Google sorted by relevance.

>From what i know, i can only search for results in a specified folder
at a time, is there any method that enable GDS to return results for
the example that i given?

Any help will be greatly appreciated.

regards,
Kelvin Ang