Redmond,Washington,United States

In its latest move to increase Internet search traffic, Microsoft Corp. has turned to an old rival, Sun Microsystems Inc., for marketing help.

Under the terms of a deal being announced Monday, Sun will promote a Microsoft toolbar for the Internet Explorer browser to U.S.-based Web surfers as they download Sun's Java software -- which is required to view some Web sites. The toolbar has a built-in box for queries to Microsoft's Live Search and buttons that give people access to MSN content.