I've just downloaded Processing and started the tutorials.  I'm a complete beginner and anyone answering my plea will have to be very explicit when explaining things to me.  No, I don't mean slagging me off!

 

On trying to run an application that has previously been exported to application I get an error message to the effect that Windows can't find javaw.exe.  I looked this problem up on the old forum and found a thread.  But, can I understand it.  No way.

 

I'm hoping someone will be kind enough to explain to a complete novice how to get round this problem.  Thanks.