Speaking of Sundance Solar, I ordered a folding 6.5 watt panel with AA/AAA battery charger from them recently. (It was on backorder, but should ship any day.)

I had been thinking about bringing a small laptop on my upcoming 3.5 month tour, but I finally decided against it due to concerns about being able to charge it via solar power (and I didn't want the extra weight of a laptop). I'm planning to bring a PDA or smartphone which has wifi access and will use that for keeping a journal and updating my blog when I can. Some of the current crop of smart phones can do almost anything a laptop can. Check out the Nokia N95 or E61i to see what I mean. Good luck!