J2EE Deployment -- Clientrun problem.

[kingpin]

Greetings.
I used the J2EE deployment tool to assemble my .jar files etc.

When I try to run the client program using "clientrun", I get the following
exception:
- java.lang.NoClassDefFoundError -
I did set the "APPCPATH" variable, and basically used sun's J2EE tutorial,
step by step.
Could this be a wrong classpath problem? Should the package be referenced
when running the program?

Any advice would be excellent.
Thanks