Microsoft published a desktop security guide for Internet Explorer 7
A quote from the article:
>> IE7 Security Guide
This white paper examines new features and settings that you can modify to provide a more locked down security configuration for Internet Explorer 7
This paper discusses both the Windows Vista and Windows XP versions of Internet Explorer. Administrators and system owners can use the guidance in this paper to tighten security settings in the browser to meet their specific needs. The document is structured to provide a description and review of the settings and features the paper discusses. Microsoft recommendations for enhancing the default security settings in some common deployment scenarios are also provided.
>> IE7 Security Guide