CROSS BOOSTS FROST AND SULLIVAN <FRSL> HOLDINGS A shareholder group led by New York investor Theodore Cross said in a Securities and Exchange Commission filing that it boosted its stake in Frost and Sullivan Inc common stock to 208,800 shares or 13.7 pct of the total outstanding. The group said Cross bought 17,000 shares in the open market between Feb. 17 and March 10. The group had said previously that its Frost and Sullivan share purchases were for investment.