Question: Is there any way of creating a public folder calendar using the Exchange Management Shell?

Outlook is not installed on the Exchange Server nor do I want to install it. Access is very limited to client computers so I would rather create it from the server itself. Surely it can't be that difficult to do?

I have tried using the PFDAVAdmin tool but it fails to connect despite numerous attempts and I have given up on it for now.

Answer: 
That is correct. You can create the elastic load balancers and turn CloudWatch on for the instances using the GUI console, but to set up autoscaling config, groups, and triggers you have to use the [AutoScaling API tools](http://developer.amazonwebservices.com/connect/entry.jspa?externalID=2535&categoryID=88).

Your other option would be to use a third party provisioning vendor like [RightScale](http://www.rightscale.com/) that adds more GUI provisioning and scaling kinds of functionality.
Yes, so far Amazon does not offer a GUI for Auto Scaling. You do have to use the command line tools (in conjunction with CloudWatch to setup monitoring to add/remove auto scaling instances), or use the APIs. In addition to Scalr you can also try
[EZAutoScaling](http://www.ezautoscaling.com) (only does Auto Scaling GUI, very cheap) and [Ylastic](http://www.ylastic.com) (does Auto Scaling GUI plus a ton more, a little more expensive).
Disclosure: I was slightly involved in EZAutoScaling.