Ask Slashdot:Linux and AS400s

Emmanuel Gilmont writes "I would like to migrate some workstations of my company to Linux only for test till more... :) (you know, chief don't dare easily) The problem is we use client (Client Access from IBM under M$NT4) to connect to an AS/400. My question is very simple: is there exist any client (free if possible) to connect to an AS/400 from Linux (X or text based)? "