The steps that follow describe the easiest way to install a single configuration of WebSphere Application Server that uses the following--
Installations using InstantDB should not be used in production environments and will not be supported if used in that manner. InstantDB is provided solely to help you evaluate WebSphere Application Server. Before installing, 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.
PDF version of steps for installation