1. Install the Exchange SDK tools (http://www.microsoft.com/downloads/details.aspx?FamilyId=4AFE3504-C209-4A73-AC5D-FF2A4A3B48B7&displaylang=en) on your Exchange Server
2. Verify that ERM is installed on the Exchange server and that the ERM Service Account verified correctly during installation (this creates the COM+ Application that runs under the identity of the Service Account).
3. Start the Exchange Explorer by clicking Start->Programs->Exchange SDK->Exchange SDK Development Tools->Exchange Explorer
4. In the Authorization screen of the Exchange Explorer, enter the credentials for the ERM Administrator (logged-on Account) in the “User Name” field and the password in the “Password” field. In the “Exchange Store URL” field you will want to enter the http path to the resource mailbox. Typically this takes the following form: http:///exchange//
Locally, I logon to my test resource by typing http://exchtest.ermtest.swinc.com/exchange/aa_room2/
In the Exchange Explorer, highlight the Inbox then click File->Add Event Registration
5. When prompted for a name for this event sink, type ERMEventRegItemAsync
6. Click “Next” to move to the next panel of the Exchange Store Event Sink Registration Wizard
7. Select the radio button corresponding to an “Asynchronous” event and click “Next” to move to the next panel of the Exchange Store Event Sink Registration Wizard
8. Tick the “OnSave” check box and click “Next” to move to the next panel of the Exchange Store Event Sink Registration Wizard
9. Select the radio button corresponding to an “Exact” scope and click “Next” to move to the next panel of the Exchange Store Event Sink Registration Wizard
10. Select the radio button corresponding to a “COM Event Sink” and click "Next" to move to the next panel of the Exchange Store Event Sink Registration Wizard
11. When prompted for a ProgID of your event sink class, type SimplerWebb.ERME2KAsyncSink and click "Next" to move to the next panel of the Exchange Store Event Sink Registration Wizard
12. Click “Finish” to end the Exchange Store Event Sink Registration Wizard and create the event sink