“Microsoft unveiled its final version of MSN Desktop Search earlier today in an attempt to take some market share from its other competitors in the market, Google and Yahoo. As with its competitors, MSN Desktop Search allows users to search contents of documents, e-mails, calendar entries and PDFs among other things, and sort them by whatever criteria they would like.”
Looks like Microsoft is trying to regain the users they lost to Firefox. If you want to test this new tool out, you are required to install the IE only toolbar, which you can get here. Also check out the original posting here.