How does VNC viewer work on Mini2440

majil
I was wondering how does vnc work in Mini2440 ?
I have a VNC client on my computer (VNC Viewer) and I entered Mini2440 IP
Address in it but it says "The connection was refused by the host computer"
There is also a VNC application installed on Qtopia but I dont know how
that works either. 
Am I supposed to enter my computer IP address in that application?
I did that but nothing happened. 
Could you guys help me?