Hmmm, to make this to work under Fedora, I am afraid you might need to recompile your kernel ( at least I think). First, make sure you have the kernel source. The ieee80211 version in the kernel in conflicting with the one the ipw2200 driver need, so you need to find and install that version (links there : http://ipw2200.sourceforge.net/
). Then, it will change/patch/comment out the buggy stop in the kernel (that why you need the source) and you might need to recompile you kernel then (not quite sure, maybe it will be fine without the recompilation part).
Once it is done, download the ipw2200 driver (or use try with yum?) and install it (using rpm or source). If the ieee80211 subsystem is correctly installed it should be easy. The driver come with firmware, so you shouldn't need to care about the firmware. as you have "iwconfig" you already have wireless-tools installed, so you should be fine with that.
I hope this help.