Creating a signed applet from the IDE?

I am a C++ student and an self taught in Java so far and have created exactly the application I have wanted in IntelliJ Idea 6 and I have run it as an applet and it works just how i want it to. It uses 3rd party imports and multiple classes and interfaces which complicates things.

How would i take this and created a signed applet for use on the web? I have little experience with Java outside the IDE.