OK. I did quite a bit of searching, learned a lot but never got the answer I needed so somebody PLEASE tell me how.... I bought the Garmin 24K West DVD and installed it on my computer with Basecamp. I purchased an SD card, plugged it into the reader on my computer and wanted to transfer the map files onto the card. It looked like there was all kindza files on there that I probably didn't need to transfer onto the SD card for it to work in my Oregon 450. Which files should I transfer off the DVD to the SD card... I know this is probably an easy question for a GPS geek. I hope to advance to noobgeek soon. Thanks.