I have a Dell Latitude D620 laptop on which I am trying to install XP, and it doesn't recognize either the wireless or Ethernet connection.
I have tried loading Windows7, and W7 connects instantaneously both via wireless and Ethernet, but I don't want to pay for it.
I have also pulled a hard drive with XP from an HP DV6000 laptop where connections worked normally, i.e. the wireless and Ehternet connections were recognized. I booted from this hard drive via a USB connection, with the same results.