Wireless Card for Inspiron 2200

According to your user guide, the Inspiron 2200 uses a standard mini-pci card:
http://support.dell.com/support/edocs/systems/ins2200/en/SM/upgrades.htm#1084976

Any standard mini-pci card should work. I would recommend that you avoid the Intel mini-pci cards.

Be sure you have the antenna leads before you buy the internal wireless card.  Open the mini pci cover on the bottom and look for two wires with metal "snaps" on the end. If the antenna leads aren't available the internal wiFi will be useless unless you are 3 inches from your router.

Make sure there is at least one antenna lead. Some Dells come with only one antenna (Inspiron 8200, for example).