Question : Problem: Air Port or Wireless Card for iMac G4

I have an iMac G4 that I need to install a wireless card in.

It is a white, half bubble looking thing. It is 800 Mhz, and the system info says "Power Mac 4,2"

Do they make a wireless card for this thing?

Answer : Problem: Air Port or Wireless Card for iMac G4

If this is your iMac:  http://support.apple.com/kb/SP93

then it has a built-in slot for the original 802.11b Airport Card:  http://www.amazon.com/Apple-Airport-Card-Network-adapter/dp/B0000899ZD

The later 802.11g Airport Extreme Card will not physically fit.