Ctrl Button help!

I'm told that Ctrl+Double Click is how you do target calling.... Well, before I found out this juicy bit of information, I went and mapped the Left Ctrl button to something else (Reverse Camera I think) and now, after unmapping it, none of the Ctrl+etc. buttons work anymore. Does anybody know what I can do? Thanks for the help!

-ksm

...Nevermind, I figured it all out