a. Set the <appSettings> ISVIntegration key to "All" (please note that this value is case sensitive and that the "A" needs to be capitalized): <add key="ISVIntegration" value="All"/>
b. Add the following line inside the <appSettings> element tags:
<add key="CRMServer" value="http://localhost:5555"/>

But as you will see from my web.config below I have no <appSettings> tags, does anyone know where should they go, so that the above can be added?

<?xml version="1.0" encoding="utf-8"?>
<configuration> 
 <system.web>
  <compilation defaultLanguage="C#" debug="false"/>
  <authentication mode="Windows"/>
  <customErrors mode="Off"/>
  <pages buffer="true" enableSessionState="false" enableViewState="false" validateRequest="false"/>
  <sessionState mode="Off"/>
  <trace enabled="false"/>
  <identity impersonate="true"/>
 </system.web> 
</configuration>