I would like to ask a noob question which is how do you create a JNLP?
In a text editor. 
There are a number of guides to JNLP format, this one covers the whole lot from what goes in your jars, to the jnlp and how to sign the jars etc. It also covers native dll/so/jnilib files for native code.
HTH
Endolf
Thanks THanks ^^
Case Closed… ;D