How to set a classpath with jar file

How to run the client program in EJB using weblogic server. I have deployed successfully but am getting exception while executing. There is an error in classpath. Please tel me how to set a classpath with jar file.

[B]Question asked by visitor shameem[/b]

the classpath used by me
c:\>set classpath=c:/Apache tomcat 5.5/common/lib/servlet.jar
i hope by seeing this you understood how to set the classpath