Hi, first place I recommend (after looking at the hkn website) ist the HKN-Guide on this forum: http://www.dual-boxing.com/showthread.php?t=16177 .
But since you said you have looked at all the guides, I think it wasn't much help for you.

I could try to create an working script for you, but to do this I would need some Informations:

1. What are the IP-Adresses of your PCs?
2. Where should the WoWs be started from (the pathes on each pc)?
3. How would you like the window-layout to be?
4. What keys do you want to boradcast (A-Z, 0-9, ...) ?

If you would be so kind to answer the questions, I could try to create a fitting script for you.

Another possibility (if you only need straight broadcasting of keys and mouse is to have a Look into Mojo (which is the curren project of the HKN developer), which has a graphical Interface and is quite easy to setup.