Last summer, 2008, I walked from Amsterdam to Fisterra on the Camino. I used the Pelgimspad books and the Via Mosana, then the GR 654 to Vezelay, then used the official guide to the Pyrenees where I linked to the Camino Primitivo to the end. It took me 85 days
I couldn't find the guides for the Netherlands in English, but the topo maps are good and you won't get lost, as the terrain is flat and the marking is for the most part adequate. The Via Mosana guide is excellent.
As far as accomodation, I carried only 1 days food at a time, and for the Netherlands I camped in my tarp the entire time except for 1 night in a hostel. I took me about a week and a half to walk the Pelgrimspad Vol 1 and 2. There are no pilgrim refuges in the Netherlands that I found, but there are gites but they are about 15-30 Euros. There are lots of campgrounds if you have a tent, and those are cheap, or you can just sleep in the countryside. If you have any questions or if you want to see pictures from my trip please reply! Good luck