Sync Outlook and Google Calendar

Google Calendar Sync will take all of your important appointments and notices that you have entered and automatically synchronize them with Outlook. What's more you can set it up so that anytime you update either Google Calendar or Outlook it will sync both.

Even better, you can set up multiple devices. If you install Google Calendar Sync on multiple computers, your Windows PDA or mobile device, laptop ... they will all be in harmony. What's separates this service from others is that it's free and the updates happen automatically, instead of needing to update manually.