"I started Outlook and a blank Houdini Plugin screen opened"
Add the following information, check the agree box at the bottom and click 'save':
Your Houdini URL: http://app2.houdiniesq.net/dfeh/esq/
Username: Type your Houdini username
Password: Type your Houdini password
IRIS Password: Contact IT Support for the IRIS password
NOTE: We recommend using the settings below. We do not recommend syncing your contacts and calendar with Houdini.