@sil04: is that still free?
@titan: thanks for the detailed reply. Command line options would be enough, like /clientonly /usermode.
My setup is: Linux PC as a server, and I would access it from any machine, Linux or Windows (user mode). I tested the 4.0 beta some months ago and when it worked, it worked very well. The speed and screen scaling were much better than with 3.5.