In the left hand side calendar listing, right click and select "Subscribe...". Paste in a url from the calendar links on the left.

From the list of links at the left of this page, 'select' the calendar you wish to subscribe to and 'copy' it.

Open Outlook 2007 and vavigate to the Calendar tab, which can be found in the menu on the left hand side.

To add the required Barker calendar, to go Tools > Account Settings > Internet Calendars.

Once on the 'Internet Calendars' page, click 'New', then 'paste' the required calendar link that you have copied from the list at the left of this page.

Navigate to File > Subscriptions in the main navigation and copy and paste the calendar of your choice.