I have a Garmin 2010C chartploter for my boat. It uses Garnin "Blue chart" memory cards. I bought a Garmin data card programmer and a 128-megabyte memory cartridge hoping to be able to download the latest NOAA Raster charts onto a Garmin memory card and use it on this chartplotter. The process is not as easy I had hoped. Can someone send me a step by step process to download a NOAA Raster chart onto the memory card? Thanks.