Network map does not show country flags in Vidalia Bundle.
You can't see the graphical elements because the Vidalia Bundle has been discontinued. The development stopped and now the new software is called Tor Browser Bundle. You should download that because it's full with security updates and provides new features that you can't find in latest version of Vidalia Bundle.
Here is a link you can follow in order to download the new software: https://www.torproject.org/projects/torbrowser.html.en