I have probably got one laying around, if I don't I have a friend that does.
I am guessing that it needs to be configured the same way as:
http://obs.nineplanets.org/meade/cable.html (DB9 is about half way down the page on the right).
The Multimeter that I may have around somewhere I believe was for heavier currents than this so I don't think that it'll fit into those plugs.