As of this writing, the current release of Struts is 1.0. Download the ZIP file from the FTP server at apache.org, and unpack it into \STRUTS. Now copy the webapps\struts-blank.war file to \TOMCAT\webapps\struts-bfg.war.
Stop and start the Tomcat server, and you'll see that there is now a struts-bfg subdirectory under webapps. You've just created a Struts-compliant Web app that you'll use to rebuild the MyAccount functionality of the BFG site using Struts.