In the following section of Chapter 9 (page 72 or 73)
"Running the ProAzure Demand-Response Service", it says 

4) Create an InfoCard using Windows CardSpace on your local machine.

5) Upload the card as one of the AppFabric solution credentials. You need this card
to call methods on the server from the gateway client.

Ignore these two steps and use the issuer name and issuer key from you AppFabric ACS service namespace page. The section was written before PDC 2009 and 
went into production before the new changes were made to ACS and ServiceBus.