While I was abroad recently, I acquired a Cisco 350 card and installed it in my
T21. The installation and configuration were a lead-pipe cinch, completely
intuitive, and I was able immediately to use the computer with the hotspot of
the hotel I stayed at in Salt Lake City Recalling the fuss I made over needing to know the experience of others, and a
checklist of their procedures, I can see that it was all much ado about
nothing, and I'm sorry for exercising the group for very little purpose. (In my
defense, the situation was not helped by the advice of another user, who told
me flat out that I must seek the advice of someone who had been through the
process, because it was unlikely that I would succeed unaided.)

Unfortunately, the Cisco 350 is no longer in the picture, and I need to acquire
another card. In the meantime, I had also acquired a Netgear 802.11b/g access
point to use at home. This raises the question of whether there is any
802.11g-capable card that is supported, even if only in 802.11b mode -- the
802.11g mode would still be useful with Linux, which I am preparing to install
in the laptop machine. If not, I might resort to simply doing all on-line work
in Linux, with say, a Netgear 802.11g wifi card.