Hi,
Done again and all working, just for anyone else struggling I did the following.
1)Downloaded latest ANRB software.(ANRB not plugged in).
2)In drivers folder deleted all old drivers.(ANRB plugged in now).
3)Downloaded new win 8 drivers zip to desktop, downloaded zip folder in to C:Airnav/Drivers folder.
4)Did 1-9 as per memo.
5)PC then reboots then go to settings/devices, go to Airnav, right click to update drivers and point it to above driver folder.
6)It searched added the new drivers and all is now working.
A big thanks to Alan and everyones help, now up and running.
Mike.