Systeris Remote for Mac

From Rampell Software:

Systeris allows remote access of your copy of Microsoft Outlook Express or Microsoft Entourage (as well as iTunes and AppleScript) through a standard web browser.

Check your e-mail, calendar, to-do list, and phone book from any computer with a web browser. At your office, instantly retrieve a message or a phone number sitting on your home computer's hard drive. Or, thousands of miles away from home, use any web browser to look up an address stored on your home computer's hard drive. All you need is an internet connection, and you will be able to check and create e-mails, appointments, tasks, and much more. Any e-mails you send through the web are saved to your Sent Mail folder on your hard drive. No matter where you are in the world, you will always have access to your data. And since Systeris is web-based, Mac users can check and modify their Outlook Express/Entourage data from Windows, Mac, Solaris, Linux, etc---any platform that has a web browser.

Once you have installed Systeris Remote, you can access your computer (and your Entourage/Outlook Express) data by either entering your computer's IP address or by using an innovative feature known as systeris.com. Instead of remembering your IP address, you can just login to http://www.systeris.com, and you will automatically be forwarded to your computer's current IP address. This is especially useful for computers with "dynamic" IP addresses.

Systeris Remote comes with a free 10-day trial.