hey all, i got a garmin nuvi 255 and just bought a 2 gig SD micro card and adapter, how do i go about adding on 2 sets of maps being the south africa map and the new australia map, there seems to be about 4 files for each map do i just stick them all onto the SD card??? or do i need to make a folder on the new SD card called garmin then put all the files into it, also i want to add the arnold swartzniger voice command onto my new SD card, so i simply put the same file in also and it comes up or is it a little more advance, please help, this is for a christmas present for my gf im doing this for and basically have to get this all up, running and fully working within 2 days so im stressing a little at the moment