There's a great article by Ron Exler of the Robert Frances Group titled "Top Ten Tips for Briefing Industry Analysts". It's a really good article so if you are involved in briefing industry analysts like Gartner, Burton Group or others this is a must read - even in you aren't preparing the briefing yourself.
The article is published in productmarketing.com which is "The Marketing Journal for Technology Product Managers" and is published by Pragmatic Marketing. The journal is free so if you want a subscription visit their web site and sign up.
Gartner, Pragmatic Marketing, productmarketing.com