Nah, I had an SD card from an another unit. Just didn't have any maps to suit this higher resolution screen. The other screen was 480x234 and this one is 800x480 - much much much better! I found the software online and then had to fiddle with the sys.txt file to get it going. I couldn't find maps that would work with it, though. Every time I loaded up it would say maps out of date. Eventually I found some and got it going. I'll definitely be putting these on there tonight though :) How long does your unit take to find a GPS lock? Mine didn't lock at all in the 5minute drive to the station whereas my old one was always inside a minute. I did notice (afterwards), however, that in the instructions it says to peel off the sticker on the back of the GPS antenna and stick it to some metal on the car. I didn't do that - I just taped in between the air con vents. How did you attach yours?