Saving in 02 form - back compatibility automatically

Whilst we are in the process of upgrading our Acad 02 licences to 04
licences, we only have one computer actually running 04. The poor guy who
works on this not only has to convert all the client drawings that come in
to 04 then re-save them for us to work on in 02, he also has to save his own
drawings in 02 form so we can read them if necessary.
We cant help the client drawings until we're upgraded but is there a way to
set his machine up so his 04 automatically saves in 02 format? (Would prefer
if this was undo-able for when we are all on 04 and it is no longer
required)

Thanks
Lee