i played with mine for a bit (about 4 months) had gotten it off e-bay, now putting it back up...included with it is rangelan2 card and symphony wireless network usb for pc so you can wireless up to your pc and cruise the net--search ebay for 510 with wireless included you should find it.
The symphony solution worked great for me and was dirt cheap. I'm not sure if the symphony pcmcia cards will work in the 510 (the intel anypoint won't cause they just plain don't fit--cardbus???) -- but the rangelan2 card I got was practically free from a friend and it works with the symphony network (whose components are under $30 at overstock.com and on ebay)
anyway if you are interested bid on it. I got windows 98 running on it, the wireless card in it, etc.
Also the greater than 256 color graphics driver --i also have RDP (remote desktop) which is the best use for it. Link right up to my XP machine remotely (on the couch) and use XP. Works great.