How to config SSL in weblogic console using my own key and cert?

[hin ryu]

i use weblogic7 and have succeed in config SSL using weblogic sample key and cert.
but i want to user my own key and cert(not through CA), so i use keytool to generate key and cert, then config the SSL in weblogic console.but i am confused in the options, such as [Trusted CA File Name]; then i restart server then it tell me that "cannt user full-strength demostic when haven't full-strength demostic lisence", i don't know how to do. maybe someone have experience about config SSL in weblogic can tell me the secret?
another several question:
1, weblogic use .pem as cert and key. i saw .cer and .der, what difference between those, can i use keytool to generate .pem?
2, how to config SSL and make key to support server-client-trust-each-other certificate?
so many confused