VNC through VNC doesn't work; Why?

[Q]

I've got 3 computers with WindowsXP + UltraVNC;
I connect (from computer #1) through VNC with #2
(1<->2) and it works;
than (when I'm on #2 through VNC)
I connect with #3 (through VNC),
but it doesn't work;
Why ?

/connection 1<->2 and 2<->3 is ok,
but I can't do anything on the #3 (from #1);

 

[gazza]

Can you connect to #3 from 1 alone ???
What error do you get ???

Maybe you have 2 ports the same.... I am sure I have tried this but was
using Unix as PC#1

PC #1 set vncserver to 5901
PC#2 set vncserver to 5902
PC#3 set vncserver to 5903


Why do it this way anyway???
What is the point ???

Just start 2 seperate connections for the same PC 1 -->2 , 1 --> 3

 

[Q]

Can you connect to #3 from 1 alone ???

...if I could I wouldn't have any probles

these 2 options solve my problems (in 99%):
- enable video hook driver (called mirror driver)
- let remote server deal with mouse cursor