Trip Computer on Type A MFD?

I've just been reading the following thread in the 'solved' section and wondered if anyone has enabled the Trip Computer on an original Type A (2 line) display? I've fitted an aftermarket radio and so have no real need of 3 lines, but would like to see MPG etc. The trip functions seem to work via OBD-II, although I didn't dare to try reset, I suppose that's another option.

http://www.berlingoforum.co.uk/thread-4462-page-3.html

Thanks