Brian thanks for the reply.
I ended up getting it working.
1. Did a full wipe and reinstall.
2. then "yum update"
3. then I added ATrpms to /etc/yum.conf
name=Fedora Core $releasever - $basearch - ATrpms
4. then "yum install madwifi madwifi-kmdl-`uname -r`"