Simple instructions on activating your Centrino Wireless device in Fedora Core.  There is no need for extra rpms from any repo.  All required is a firmware file and a few commands.
mkdir ~/tmp
Second Download the firmware from Sourceforge . If you run fc6 then you need the 3.0 version.  Scroll to the bottom and click I Agree.  This will download the firmware to your desktop by default in firefox.  Move the firmware archive to the tmp folder you created.

for older kernels
mv ~/Desktop/*-2.4.tgz ~/tmp;  cd tmp
for fc6  
mv ~/Desktop/*-3.0.tgz ~/tmp;  cd tmp 

 
Extract the archive
tar -zxvf ipw2200-fw-2.4.tgz  or  tar -zxvf ipw2200-fw-3.0.tgz
Switch to root
su
copy the files to the firmware folder
cp * /lib/firmware
Unload the wireless module
rmmod ipw2200
Reload the wireless module
modprobe ipw2200
Network Manager should now start scanning for your wireless access point.  If not, you have 2 options; run the command iwconfig  or in gnome start the NetworkManager service.  

su -
service NetworkManager on; service NetworkManager start 

 

 

 

 

 

I have written a script to automate the above install 2.4 version  or  install 3.0 fw version and run with the following..
  ./ipw2200inst