First, check the WebSphere Application Server Supported Hardware, Software, and APIs Web site at www.ibm.com/software/webservers/appserv/doc/latest/prereq.html to ensure that you have the correct prerequisites, including operating system patches. WebSphere Application Server comes with the with the Sun SDK and IBM HTTP Server. If you have not already done so, install DB2 UDB and then obtain the product CD-ROM for WebSphere Application Server or download the product from the Web site www.ibm.com/software/webservers/appserv/download.html. Information on installation follows: