Cheers riz, I have looked into some of that previously but to be honest what I really want it for is the data collection side of things. I love the idea of going to check on my cab and flipping up my laptop to see a graph displaying more information than I know what to do with. I could gather most of the info and plot a graph myself but I can't realy be arsed with all that. Maybe someday when I have the money il set up my dream grow and indulge my love of a good graph.