Testing REST on SBS is quick and straight forward with the REST Client Firefox Add-on.

1. Go to your SBS Admin Console and System > Settings > Web Services to enable REST web services.  You will need to restart your server for the settings to take effect.
   
   
2. Read through the REST Web Services Reference documentation to find what commands you will need.
3. Once REST Client is installed, open it through Tools > REST Client in Firefox.
4. Log into the appropriate account.
   
   
5. Fill out the appropriate request.  Put your XML parameters in the Request Body field.