iPhone browser let you browse file in window explorer fashion. You can download iPhone browser from here

By using iPhone browser, you can take back up of files and folders from your iPhone to computer. The backup you take by this browser is not very user friendly. It simply dumps iPhone files without doing any changes. It might not be very useful to use such backups in your computer but it does help a lot when you want to restore these files to iPhone. To restore these files simple drag and drop files to appropriate location in iPhone browser.