Server and software maker Sun Microsystems Inc. has agreed to use chips from Intel Corp. in some of its servers and for Intel to endorse Sun's Solaris operating system, officials from both companies said Monday, AP reported. The alliance was announced at a joint news conference with Intel Chief Executive Officer Paul Otellini and Sun CEO Jonathan Schwartz. The deal marks a major design win for Intel, the world's largest computer chip maker, which has been fighting to reverse plunging profits and regain market share lost to archrival Advanced Micro Devices Inc. It is also a sizable victory for Sun as the company continues its long climb back to profitability following the dot-com collapse and seeks more mainstream adoption of its servers and software products.