Have you had a look at Sheldon Brown's site
Ummm... I had a look, it shed some light on things but I'm no closer to knowing if or how I can convert this hub.
I had these wheels built a couple of years back using a (stupidly chosen) Miche hub which uses the old campagnolo 8 spd spline pattern and just to confuse things it uses a shimano lockring! Anyway I spent a few quid getting them built with nice spokes and rims and only did a couple of tours on them so would really like to keep them for my new touring rig which runs modern campagnolo 9spd. To complicate things further the new frame has 135mm dropouts. To get me on the road I managed to put a new longer axle through a Pro-lite 'como' to fill out the 135 spacing. The 'Como' is a pretty strong entry level road wheel but it's never going to hold up with a fully loaded touring bike.
Here is the hub in question: http://www.chainreactioncycles.com/Mode ... elID=47930
I can't find any further info online about these except from other people having similar compatibility issues as me
For what it's worth it's a very good hub for the money if you don't need to run more than 8 sprockets.