Thanks, That's good to know. It looks like it's Realtek under the hood, but I'm not sure which model it corresponds to in terms of drivers, particularly needed for the Mac. It doesn't show up in the network preferences panel for the Mac, so I'm pretty sure it needs a driver. I tried one from Airlink and it didn't work.
If anyone knows a workable driver for the various Mac OS's, let me know.
Meanwhile, I'll probably buy a cheap eBay wifi dongle.
Thanks, Richard