I've been playing again. OpenStreetMap user ComputerTeddy runs regular updates of the OSM data into Garmin-friendly tiles. I've taken his fresh 15th January 02009 tiles for UK and Ireland, combined them with the SMC's UK topological map, and put them all into a Garmin-installable streets-and-topo map.
You can download it here: http://www.ravenfamily.org/andyg/maps
( Cut for geeky details... )
You can download it here: http://www.ravenfamily.org/andyg/maps
( Cut for geeky details... )