Can't find class ERROR

[Gandhi, Dipal N (Dipal)]

                        Hi Friends,

                        I installed Tomcat's Binary Version 3.2.2. But when
I try to run server on my HP-UX machine using,

        > /bin/startup.sh 

        it gives me following error........

                        "Can't find class org.apache.tomcat.startup.Tomcat"

                        Any suggestion will be appreciated...

                        Thanks..

                        DIPAL