Two problems with X

[José Antonio Moreno Zamora]

I am trying to connect to Sun WS from an PC with XP and cygwin throug
typical "X -query remote_ws -from local_ws"
I don’t obtain any message with error, but the remote login screen doesn’t
appear, changing resolution and depth the maximum I have got is to see the
waiting clock from CDE mouse. 
When I star X in local mode and connect by telnet exporting display from
remote machine, I can start perfectly the apps, my problem is only with X
-query mode.
I have read a lot of questions and answer about this problem but I can solve
it. Anyone can help me?
Other question:
To access to a machine with SSH and "X -query" which steps I must do? I have
seen the option "ssh -X -l user remote_ws", but to obtain whole desktop?
Thanks in advance.
Josan M.