Now, now, Xavier... There are two schools of thought going on here. You can give a person a fish and feed him for a day (which is what you did by expending the time and providing the link), or you can teach the person to fish and they can feed themselves for a lifetime (which is what RWinlow was implying in suggesting the OP learn to use the search function). That's why this is a forum and not an tech support site.
In either case, Macci3 can now use the information and search for more if it's not enough. Not bad eh? Two schools worth of answers with one question. You can't beat that.
Macci3, if you need more help, just ask! I don't think I can provide an answer for the Nuvi but maybe someone else can.