Proxy for Informix/MySQL

Hi! I have the following problem: I`ve got a big MySQL-database, where all needed data is stored. Beside that System I`ve got an Informix 7.31 on Linux and multiple NextStep Workstations. The Workstations are used with special Software, which uses the internal Next Database-Connectors to connect to the informix database. No other systems are using the informix any more, everything has been ported to the MySQL system. The Software on the Workstations won`t be ported until end of next year, so I am searching a faster solution to connect those Next-Systems to the MySQL database. Because the software uses these special database-connectors, I would think of "emulating" Informix-sqlexec, for example by developing a kind of proxy between Workstations and MySQL. My Questions: Is it possible to implement such a proxy? Is the protocol, used for the sqlexec-Service documented? Can anybody think of another possible solution? Any hints, urls or ideas would be nice! Thanks, Michael