hn200w and replaceing its defective PCMCIA card

My son's HN200W HP wireless access point quit working. It never worked
very good in the first place, with signal strength going from excellent to
no-signal and back every two minutes. At other times (very rare) it would
work o.k. He got it on ebay some time ago and cannot return it. The
gateway/router wired part works fine and has never been a problem A
spectrum analyzer shows a signal being emitted about 2.42 ghz, but the
device no longer picks up any traffic.

I opened it up and discovered that it contained what appears to be a
LINKSYS WPC11 wireless pcmcia card with a pair of connectors for the antenna
where the edge of the card would normally poke out of a notebook. It does
not have any markings on it, but when I plugged it into a Windows XP system,
a dialog box popped up a "new hardware found" and indicated it had found the
LINKSYS WPC11 pc card. Anybody got any idea on if replaceing that pcmcia
card with a notebook type might work? I found some at compgeeks for under
$40 includeing G band pcmcia cards. Might one of those "G" even work in a
HN200W in place of the "11B" type card??