Keyboard remapping - scancodes/keycodes and Fn key

Hello,
I'm using Archlinux on a MacBook Pro and I'm overall pretty happy.
However I desperately want to swap my Fn and Control keys. I know that this is a tricky business but I also know that this can be done in OS X via a kext module, so I hope it can be done in Linux as well.
The output of showkey prints when I press Fn:
keycode 464 press
keycode 464 release
showkey -s however prints nothing when I press just Fn.
Here's the output of evtest:
Event: time 1396031474.937906, -------------- SYN_REPORT ------------
Event: time 1396031475.169971, type 1 (EV_KEY), code 464 (KEY_FN), value 1
It does not print an EV_MSC line as the Control key does:
Event: time 1396031475.561965, -------------- SYN_REPORT ------------
Event: time 1396031475.729966, type 4 (EV_MSC), code 4 (MSC_SCAN), value 700e0
Event: time 1396031475.729966, type 1 (EV_KEY), code 29 (KEY_LEFTCTRL), value 1
So, it looks like my plan to remap the keys using scancodes (via setkeycodes) will not work. Remapping via loadkeys (keycode 464 = Control) also does not work - the Fn+<letter> combination is treated as if just the letter has been pressed.
I will appreciate any kind of help as I am pretty stuck at this point.
Thanks!
P.S.: Sorry if the topic is in the wrong forum.

I do not have a Thinkvantage folder in Control Panel.
I was unable to find any reference on Lenovo's site for the T500 for keyboard customization.
I took you original advice, before editing, and installed the Keyboard customizer for the T400. This works as expected for the T500. I looked through the programs supplied by Lenovo for the T500 and could not find any program for the keyboard on my system.
I have removed some of the less than useful Lenovo configuration and control programs maybe that is the reason for the missing Control Panel folder. Many seem to be slow to get things right and often get things wrong, but that is another thread. I do not understand why IBM and now Lenovo keep making programs that are redundant with small gain relative to standard Windows features. I have found the WiFi and Wired networking particularly difficult to get working smoothly. The only solution is to turn off the WiFi.
Now if you have a reason for 4 displays, 2 ATi, and 2 Intel Mobile in the windows display confguration panel on my system I will be forever grateful.
Anyway thank you for you help in finding a solution to my external keyboard customization problem.

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