How to change the maps

I am using the basic carterlake 1 page setup not the ajax/php. all working well. ( still working on some of the text) The main issue is that as I live in the UK the NOAA maps etc are not really appropriate, could some suggest an alternative. MESO maps perhaps? or could I replace something with my web cam images. If so a step by step “how to” guide would be helpful as I am a complete novice at this and messing about with the code and tags is very daunting.
http://homepage.ntlworld.com/philip.peacock2/index.html