Installed Airport Ext, computer won't work

Bought a "new" airport extreme card for my G4 desktop (1.25 proc, 770mg ram) and installed per instructions in the G4 manual. Went in fine. The manual (and apple web site) said that I could use the Airp Extr card.
Booted up computer, and computer would not boot....made some noises, but no screen. Black.
REinstalled the card again, checked the Ram (to make sure in secure) and tried again. Nope. Nothing but a little humming at beginning.
Removed the Airport Extreme and computer works fine. All okay (though , my time /clock went to 1969, or something).
Ebay seller says card is new....he has a perfect seller rating....and willing to take back. Fine.
But could it be anything else on my end before I return?
JON

Well, was not able to figure out if my iMac was Firewire800 ready. Something I don't understand, and could not make out from the page you provided.
But with my serial number, my computer fits under this link
http://support.apple.com/specs/imac/iMacUSB_20.html
and it appears it takes the AirpExtreme. So....either it is a dead one...or..who knows, right?
j

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I understand you aren't able to scan from the printer to the computer.
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Thank you for posting on the HP Forums. Have a great day!
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" on the right to say “Thanks” for helping!
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I work on behalf of HP

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Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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