Snip from WSJ article:
The Redmond, Wash., software maker next week is expected to announce that Steve Berkowitz is joining Microsoft as the vice president in charge of MSN, the Microsoft division that includes the MSN Internet portal and search businesses.
The appointment is part of a recent restructuring at Microsoft that attempts to retool the company to better compete with Internet search giant Google Inc.
Link (paid subscribers only) and here's an extensive entry on John Battelle's Searchblog with more background: Link.