Thanks Guy's! I dropped the file onto a 2Gb micro SD and it worked great. Well first you have to make a directory called "Garmin" and put the .img in this folder. The map file is only 153Mb so it takes up little room. I use the same flash card in my Blackberry. I now have Topo and Blue chart on two separate SD cards. When one is in the Garmin the other is in the phone and visa versa. Way Cool!

Pete