Tech titans ready to brawl / Google, Microsoft look to square off on Net and desktop

Tech titans ready to brawl / Google, Microsoft look to square off on Net and desktop: "For years, Microsoft has been able to use its money and size to muscle aside its competitors.
Now it's facing a competitor it can't push around so easily -- Google.
The popular search engine is mounting what may be the most serious challenge yet to Microsoft's desktop dominance. "