Web Interface Single Signon

If you want single sign on for web interface where the users AD credentials are pushed through to the web interface page then you need to install the full version of the Client and set the following registry keys on your clients

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Logon\Local Credentials]
"SSOnUserSetting"="true"
"EnableSSOnThruICAFile"="true"
"UseLocalUserAndPassword"="true"
"SSOnCredentialType"="Any,NT,NDS"