For those people who havent found this realy need piece of freeware add on software.
Basically one of the annoyances of using TOMTOM3 is that it only supports 4 digit postcode searching. after the 4th digit u have to then locate the streetname etc.
Well i was told about this application today called "UKPOSTCODE" this is the best, it supports 6digit postcode searching and works as a plugin for TOMTOM3. basically u enter the postcode and choose to "either navigate to", or "show on map". It then launches TOMTOM3 and of you go, no more messing around with the TOMTOM3 postcode interface.
link is here http://www.digitools.co.uk/home.php
please tell everyone whos running TOMTOM3 and remember if u use it then donate.