Hi all...first post on what looks like a very useful/helpful/friendly forum!

I've just dipped my toes into the wonderful world of satnav with an Acer N35. I've mastered (ha! there's a laugh!) the basics, but can't for the life of me work out how to keep the thing lit up so I can see it properly! I assume it goes into a power-saving mode all on its own, but any ideas how I can get it not to?!

thanks in advance.