I finally got my configuration right. I have the Linksys WRT54G3G Wlan Router, with a mobile broadband data service. I had troubles getting the right hardware, since the Router can't handle all of todays datacards (as of yet, new firmwares are coming), but I got one, a Globetrotter Quad GT series. Not HSDPA yet, but I'm patient.

Now, I have my very personal wlan, connected with mobile broadband, the router even has a 12V power input, so it even would work in an car (if I would have one, I'm a totally pure motorbiker). With that router I have everything I need and want on my N800, no PC, no Laptop, no nothing. I finally got everything just the way I like it, minimalistic, and elegant, I believe. And am totally mobile with it.

My point is, that with the right connection the N800 can be all there's need for, even completely unhacked. I believe I can grow old with that.