connecting 2 as400s

["Simpson, Doug" <dsimpson@xxxxxxxxxxxxxxxx>]

Hello all,
BTW - I am a network admin with more knowledge on the PC side, please pardon
my lack of
as400 knowledge.  Also, hope I chose the correct list to post this question.

Right now my company has has an as400 that connects to outside as400s
(clients) via a
"passthru" over old ibm modems.  The great thing for users is that they can
use sna and
snads and run via their client access, etc.  The negative is that these
modems sit on an
old e50 and one day it will die and there will be nothing to replace it.
Also these
modems are old and expensive to purchase.
I am trying to figure out a replacement, hopefully over the Internet.  I do
not want
this change to be any different for the user (ie still be able to use client
access and
sna -snads and their regular commands.
My first step is to try and connect two as400s on my (tcp/ip) network.  Can
I do this
without having to purchase more hardware?  I have done some research but I
just can't
find the one doc/howto about connecting two as400 servers across a tcp/ip
and still
continue to use sna.
Thank you for you help -