I seem to recall the entrasys roamabout does appear in the FAQ as being a compatible card. There are a few mentions of it in the forums too as I did a search when I was buying a card. I think the thread concerned an issue with drivers and was cleared up using either older or newer drivers. a search using enterasys should reveal all threads involving the card. they are a good price.
I found a lucent orinoco gold card on ebay which appears to work very well, I paid a premium price though as the bidding was hot but it was worth it to get a good compatible card.
On installation to my XP laptop XP found the drivers and set the card up without me having to load the drivers or client software from the cd that came with the card.
netstumbler appears to work fine and busily scans for activity. unfortunately havent been able to ride to the city yet and dont think there will be much activity in my scottish highland village, looking forward to riding around Inverness which is a larger urban environment.
here is a link for a lucent silver card on uk ebay
http://cgi.ebay.co.uk/ws/eBayISAPI.d...category=44996
http://cgi.ebay.co.uk/ws/eBayISAPI.d...category=45000
avoid the proxim variations with a picture of an odd looking man on them.
good luck
paul......scottish highlands (snowed up)