Apologies for my extreme newbie-ism.

I would like to have a calendar available on this N800 when I am not in a wifi area. Is that possible? And contacts with addresses? (Yes, yes, I know this is not a PDA as such, but I can cut down on what I have to carry around if I can just get an offline calendar and a few addresses in here that I can access from anywhere). Any help?

Thanks.