This literally happened in the last 24 hours. XDA forums member found a way to unlock Surface RT and give it ability to run 3rd party programs in desktop mode. A slew of x86 ports followed.
You can read about it here
http://www.theverge.com/2013/1/10/3863818/windows-rt-jailbreak-tool-released
http://forum.xda-developers.com/showthread.php?t=2092348
http://forum.xda-developers.com/showthread.php?t=2092158
its a little late now but i will try this tomorrow on my surface...
=====================
Update Feb 22
This scene has completely exploded with over 50 desktop apps ported so far.
Details here
http://forum.xda-developers.com/showthread.php?t=2092348
I have 7zip, Fiddler, DOS box, Quake 2 all installed on my Surface RT and all running great. Chrome and Firefox are on their way...
