What's the unit (Elite/Elite HDI/etc.) and the software version number?

SD Cards - typically 2 GB or less but can work with specially formatted 4 GB cards
SDHC Cards - typically 4 GB to 32 GB but can work with specially formatted 64 GB cards
SDXC Cards - typically 64 GB and up.

Elite - SD support
Elite HDI - SD/SDHC support but I think there's an old issue with cards not loading on one of the initial software versions which, I believe, just requires a software upgrade.

This is the Elite i have www.cactusnav.com/lowrance-elite-inch-co...plotter-p-11685.html

I will find out what software version it is tomorrow

You'll need a standard SD Card or to reformat your card as FAT16.

Note: I believe FAT16B also works on those devices if you want to take advantage of all 4 GB. I hear it worked on the LMS devices through the Transcend 4 GB cards.

en.wikipedia.org/wiki/File_Allocation_Table

The Elite version i have is:
ELITE 5M
VERSION3.60
NAVICO CHART VERSION 2.1

Thanks for all your help so far, next week when i am out fishing i will give the maps a try and see if they work.

thanks..james