Best Wireless Card To Buy?

[Graham]

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I am currently running Kubuntu Feisty and have a wired connection to a
TP Link TL-WR541G router, which in turn connects to my cable service
through a modem supplied by the cable company (originally Telewest here
in the UK, now Virgin Media).

At the moment, I have a redudant Mac G4 with an inbuilt Airport
wireless card, but I have found that signal strength is less that good
even running OSX 10 (Tiger).  I could install a PPC version of Kubuntu
on that beast and add the hard drive from the Kubuntu box to retain data
if all fails, but for I now find myself having to move my PC to another
part of the house and I wonder if anybody can recommend a suitable
wireless card to get round the inconvenience that would cause.

I'd be prepared to get another router if I need to get compatible
equipment, but I need some pointers.  Any help you can give will be
will be gratefully received.

- -- 

Graham
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