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Should I check to see if my computer has that card already, or is it rare to have one already installed?



It's pretty rare to have one installed already. To find out, go to Control Panel / Network and Internet Connections / Network Connections.

This screen lists the network adapters in your PC. If you've got a Home PNA card, it'll be in that list.

Alternatively, you can just check the backplane of the PC, but you might have a 56K modem card in there, which will look very similar.

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Once I install that card, is there a complicated set-up to get this working again?


As long as you get one with out-of-the-box support for Windows XP, it should be extremely easy.
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-- roger