How to change the default Google Desktop Data index folder

Google desktop search uses a folder in which it stores its index files. This folder called “Google Desktop Data” is by default place in the “My Documents” folder of your pc. To me that’s not a logical place though as I only want to have files I actively use to be in the “Mt Documents” folders. Music, Video, Word-files and spreadsheets are fine, index files from a search tool are not.