Firstly a huge thanks to Kyle Rollin who originally wrote a great plugin for this purpose. Using it was pretty straight forward. You can see what he had done from here(http://evilquark.com). Reading this and then just trying out a little bit of different solutions did it for me. As you can see on this site the direction number 7 publish and pray does tell a lot. I was lucky and I hope that everyone else will get this working the same way.
In my case the story was though a little different. I run wordpress on this .co.uk site and rely heavily on GUI. I had to though use fireFTP on firefox to get this working.
So what I did was first I downloaded this wp-proc-embed.tar.gz. I unpacked this file and turned it into a zip-file(), which WordPress recognises quite easily and the GUI will understand. Now you have a file that canbe seen in your Plugins section. The hard part is, that it’s still wrong. I had to use the FTP and go to /public_html/wp-content/plugins/wp-proc-embed/ and paste the contents of the zip-file here. I’m sure that many would do this some shorter way, but I’m just trying to follow what I did.
Now you can create a new post or page and add a line LEFT SQUARE BRACKET processing=threeballsclass 200 200 RIGHT SQUARE BRACKET
You must notice that this only plays the practice applet included here, but that is a lot already in my opinion. I really hope that some people find this helpful and I will try to publish this with pictures soon.