Sync this calendar with Outlook:

1. In Outlook, on the Tools menu, click Account Settings.
2. On the Internet Calendars tab, click New.
3. Copy/Paste the following: http://www.google.com/calendar/ical/webmaster.spe%40gmail.com/public/basic.ics
4. Click Add.
5. In the Folder Name box, type the name of the calendar as you want it to appear in Outlook, and then click OK.

Sync this calendar with iCal:

1. Open iCal, then click Calendar on the menu bar, and then Subscribe.
2. Copy/Paste the following: http://www.google.com/calendar/ical/webmaster.spe%40gmail.com/public/basic.ics
   

Sync this calendar with your iPhone:

1. Visit www.ouspe.com from your iPhone
2. Click this link:  http://www.google.com/calendar/ical/webmaster.spe%40gmail.com/public/basic.ics