Thanks for the tips everyone!
I know the particular HPC's I'm looking for are kind of an odd niche: new enough to support wifi cards, old enough to have a B&W screens - though I saw quite a few on the hardware list here on hpcfactor, they're mostly rare on ebay. So I think we'll go with an Apple messagepad or emate, which seem quite common and cheap, as well as doing what I want. The dana looks worth checking out too, though.
The reason I wanted a B&W screen is that computer screens of any kind seem to aggrevate my mom's dizzyness
(it's some kind of inner ear problem
), so I'm hoping one that emits no light but just reflects it
(a grayscale lcd with the backlight off
) would be best, and at least let her read emails. I myself enjoy my mp780 very much, though.
So I guess as far as hpcbay I'll close my 'request' thread.. but thanks agian for the suggestions and help