1. Ok, first of all, your going to need winrar. you can download this here.
2. After you download winrar, make a folder in your documents and name it project-pkz. (it doesnt matter what you name it as long as your can remember it)
3. Now that you have your folder made, its time to download the client itself. Go to http://files.filefront.com/project+pkz+v3rar/;12056947;/fileinfo.html to download the client (v3). It will give you the option to open, save, or cancel. You need to click open.
4. After it downloads, it will come up in a winrar box. at the top left , there wil be a button thats reads "Extract to". click that button and another box will come up. From there you will find the folder you made earlier in step 2 and click it.
5. After it is finished extracting, you will click threw the project-pkz folder untill you get a list of options. click the "run.bat" and the client should load!
NOTE: If the client doesnt load, it most likely means you dont have the new Java download. To get this go to Java.com
and download "Free Java Download"