Did you install the firmware? You should copy the .fw files to /lib/firmware. Then modprobe the driver (I have the ipw2100 card but I guess the principle is the same). Check dmesg for any errors (like if it can't find the firmware).
The file /etc/sysconfig/network-scripts/ifcfg-eth1 should have its "Type" set to "Wireless" (I believe the intel script did this already, but I may be wrong).
When security is disabled, the network should work by default (or you could try "sudo iwconfig eth1 essid <whatever your AP is called>", assuming eth1 is your wireless device).
If security is enabled, do "sudo iwconfig eth1 key s:yourpassword".
And don't forget "sudo ifconfig eth1 up" and "sudo dhclient eth1"
I can't recall anything else that I did to get my pro/wireless 2100 going under fc3. Hope this helps.