[c-nsp] console nat?

[Janet Sullivan]

I have a cisco 2511 that is being used as a console server for other 
routers.  For the sake of this explanation, its ip is 192.168.23.200.

Currently, its set up in the old fashioned way so that telneting to 
192.168.23.200 port 2001 connects you to the console of the first 
router, 192.168.23.200 port 2002 connects you to the console of the 
second router, etc.

What I want to do is set up some sort of nat translation on the 2511, so 
the following will happen:

telnet to 192.168.23.201 - connect to console of first router
telnet to 192.168.23.202 - connect to console of second router
etc.

That requires that the 2511 listen to 192.168.23.201 - 192.168.23.216 
and map those addresses to 192.168.23.200 port 2001 through 
192.168.23.200 port 2016.

How would I set this up?  My cisco nat kung-fu isn't very strong.