Google Inc. took a step toward challenging Microsoft Corp.'s dominance of computer software with the announcement Tuesday of a collaboration agreement with Sun Microsystems Inc.

The move could lead to Google offering next-generation word processing, spreadsheet and collaboration tools that would take on Microsoft's industry-leading Office suite of software.

But for now its significance may be mostly as a symbolic shot across Microsoft's bow, signaling Google's intention of attacking the world's biggest software company head on.

This does not seem to be enough to be a Microsoft Killer. I still feel the company in the best position to take on MS, as if we have to kill the giant would certainly be Apple. I still like windows XP it is a fair priced OS. It does everything I like to do very well. It is for the most part very stable in light of the fact that the entire world is trying to beat it up.

If Apple tomorrow said, we have tested Tiger and you can now install it to any Intel based computer. This would be a serious change in the game.