The Watson 2.0 contextual search software released by Intellext Inc. earlier this month is now available as an add-in package for Microsoft Corp.s MSN Search Toolbar application, Intellext announced Friday.

Watson 2.0, which Intellext calls a " personal research assistant," provides computer users with Web links related to text displayed on Microsofts Word, PowerPoint, Outlook and Internet Explorer applications, as well as the Firefox browser for the stand-alone Watson 2.0 package. For example, if a computer user surfed to the CNN.com Friday story, "Evacuee bus explodes as Rita closes in," Watson would point the user to 36 related general Web links, one news link, two Web log links, and three research links.

With Watson incorporated into the Windows Desktop Search functionality of the MSN Search Toolbar, computer users get a "non-intrusive sidebar" that automatically returns related Web data, Intellext said. The MSN Search Toolbar Watson download, available at http://addins.msn.com/addins_category_app.aspx, is available for a free 30-day trial; after that, it costs US$10 a month or $99 a year.

In addition to marketing Watson to individual computer users, Intellext is aiming at corporate users. Because Watson can provide contextual links for Word, PowerPoint or Outlook documents, it can help corporate users with needed research, said Mark Tack, director of marketing for the 2-year-old company.

Tack and Jay Budzik, chief technologist at Intellext, said they dont see search engine giant Google Inc. as competition, even though Google provides its own desktop search functionality. Watson can search Google results, but Watsons search results scan a number of search engines, not just Googles Budzik said. Watson goes beyond the functionality of some toolbars that provide weather information or URL histories, he said.

"Watson offers an interesting alternative -- information that is relevant to what youre doing right now as youre working," he added.

The Intellext partnership with Microsoft benefits both companies, Budzik added. Watson can provide benefits to MSN Search Toolbar users, and Microsoft gives the new Watson application exposure. Intellext released the first version of Watson in February, and the 2.0 version earlier this month.

"For us, its a boon," Budzik said of the MSN download. "There are millions of users of MSN Search Toolbar ... who now will be offered a 30-day trial of the Watson tool."

Before Watson appeared on the MSN add-ins download page Thursday, it had about 2,000 users. "Since then, weve had a huge spike in downloads," Tack said.