two way sync with Outlook 2007!
Simply save the installer to your machine.
right click on the installer executable and select properties
in the second tab (Compatibility) check the checkbox "Run this program in compatibility mode for:"
and in the dropdown list, select "Windows XP".
Run the installer
Then before running it, navigate to the installed executable with windows explorer. It will probably be in:
C:\Program Files (x86)\Google\Google Calendar Sync\
right click on GoogleCalendarSync.exe and do the same as for the installer. (Compatibility with Windows XP)