Somers, N.Y.-IBM Corp. said Tuesday that it will market e-commerce software designed to handle b-to-b trade across multiple countries and cultures. The new software, which will be bundled in its WebSphere Commerce Suite Version 5.1, is designed to handle region-specific sales tax and shipping rules, customized catalogs and local payment. The move is part of an overall push by IBM to establish WebSphere as a major b-to-b brand. Previously, the software had been viewed as primarily targeted toward businesses selling to consumers. IBM said the new software will allow people to purchase from wireless devices, as well as standard Web browsers.