Dual maps on Oregon 300

[+shantz_uk_&_cleverclogs]

I have the national parks maps along with the basemaps installed on my Oregon 300, is it possible to also install maps from Talky Toaster onto the same GPS and switch between the them? Im sure I saw this on a Oregon at a meet that I recentley attended. I was told that one map must be called gmapsupp.img and there are only certain names that the other maps can be called but I have no idea what names these can be or how to load the maps etc. Any words of wisdom / help would be appreciated.

Thanks in advance.

[+splashy]

On the Oregon you can rename maps as gmapsupp.img to myname.img

There is no need for a map to be called gmapsupp.img.

Edited September 14, 2010 by splashy