Hi all. My friend just bought a Garmin eTrex Venture CX GPS for cheap when abroad. It says you can put UK maps into it using its memory card, but you have to buy the CDs from Garmin, im guessing theyll be pretty expensive. Does anybody know what file format the maps on them are? Currently got Memory Map with all the UK OS maps (got it cheaper than cheap ) So was wondering if its *.qct maps were compatible with the Garmin?