heres the response i just got from carin
Hi
there is only partial postcode search on your system and with the later mapping disc, it's only on the latest nav systems that full postcode search feature is available, by putting in say WF15 6 then the street name allows only the street within that postcode, as in Birmingham there is 14 Green Lane's, so by typing in the first part of the postcode gives you the correct Green Lane.
for maps go to our web page
regards
Joe Kenyon
01924 403097
fax 400628
ALSO i just put in the latest 2007 disc in and its let me do a partial post code search also it has a lot better response regards junctions , all in all i am satisfied now with the results, i dont think we would benefit anything updating to the 2.3 as mentioned.
UNLESS someone knows different ?