Powershell script for getting folder sizes

Howdy:

I need a Powershell script that will tell me the sizes of each individual folder in C:\Users\Shares on my SBS2011 server. I thought Get-Item C:\Users\Shares would work, but i got nothing back for a value, so I did a Google search and found this: http://technet.microsoft.com/en-us/library/ff730945.aspx

This didn't help and the scripts did not work.

Does anyone have a simple Powershell script they could share with me that will give me the folder sizes of each individual's user folder in C:\users\shares on my server?

Thanks!

Rob