EDIT: I was logged in as admin always. Now I created a new admin account. My old user is now a standard account. I started WAR and HKN as admin. Now its working? Sounds strange to me because I had only this one admin account and no other account (I probably should care more for security). Maybe I changed something else as well. However its working now and I am happy ;-)



Ok, sorry, english is not my first language ;-)

I run HKN on my Vista Notebook. In the Connection Settings I choose Vista HKN to be the server. I load the script you posted. I adjusted the IP - Address and removed everything that has to do with w3 (I only got 2 machines). I also removed the mouse click related part.
On my XP notebook I choose XP to be the client and dont load any script.
Now on both notebooks I bring the Warhammer windows on top (if that is not the correct word: activate or focus?). On the Vista War-Window I press a key, HKN doesnt do anything. Now (still Vista) I bring the HKN window in Warhammer on top. I press a key, the key is sent to the XP client and the XP Warhammer is receiving the key pressed. If I press a key in the XP Warhammer window HKN sends the key to the Vista HKN. HKN is able to bring the Vista Warhammer window on top, but never injects the keypress.

In the 2nd scenario I choose Vista to be the HKN client and XP to be the HKN server. I exactly got the same issue then.