How do I use Paul Irish's Conditional comments in a SharePoint 2010 master page

Question

I want to use Paul Irish\'s Conditional comments from the Boilerplate HTML template:

My concern is the other things that had to get stripped out that may be needed by SharePoint pages. Here is the original SharePoint HTML tag:

Once you start adding that stuff in the HTML tags with the conditional comments the page breaks.

I urge you to also review your HTML/CSS to see if some of the conditional CSS can be removed to help streamline your solution.