I am getting this error on my Google Calendar Events plugin:

>Feed 1: There are no HTTP transports available which can complete the requested request. Please ensure your feed URL is correct.

I have tested this plugin on a web hosting company and it works fine. But when I moved my WordPress site to a local hosting machine I get this error. My server runs on IIS6 and Windows Server 2003. What could this error be? Does it have to do with Google web extensions not being installed?