Speaking of such things....The kid gave us a Toshiba laptop so the wife could put her legs up and still play her Pogo card games.
A reasonably new machine running XP.
Came with a Belkin adaptor. I went out and bought a standard Linksys wireless router, and set it up without any difficulty. The laptop would not connect. I suspected the Belkin adaptor, which was not only old and in the older "B" format, but it got very hot as well.
I bought a new D-link 802.11G adapter, and installed that. Haha! Connected to the network right away. Excellent signal strength.
Would not connect to the internet.
This resulted in over a week of back-and-forth on the Linksys and D-Link support boards, with numerous fixes suggested and none of them working.
Finally, I unistalled the router, deleted the software, and re-installed everything from scratch.
It worked.
Now, I have to clean all the junk out of the laptop and turn off the umpteen million services that XP runs to get enough memory to run her games....