Windows router and linux...
 

Lets just say we have small netowrk at home with 3 computers.

1 is connected to internet working as router .(windows 2000)
2 clients linux systems.

one adress ip 203.544.43.22( fake just example)

my question is haw can i access to linux server via ssh.?

is it possible?

can i make like http://linux.203.544.43.22/
to connect to the linux server.

You haven't mentioned whether the linux machines have a public ip or not. I assume they don't which would mean that you could not directly access the ssh server.
You could however choose to forward port 22 from the windows machine to one of the linux machines. That is if port 22 is not being used by the windows machine. You could only do this for one of your linux machines. If you want to enable it also for the second then you will have to use a different port.