How to turn off applilcation global hotkey ?

Hello.

Some application (most probably one from ivona.com) have register global hotkey Ctrl+Alt+T.
So I can not start quick search in Total Commander from leter T.
I turn off ivona application but hotkey still lead to unexsisting shortcut to exe file.
I was searching in google for turning off hotkeys in windows, but all what I find is how to turn off build in windows hot keys and applications to register new global hotkeys.

Is there a way to find witch task have registred hotkey ?
Is there some place in registry where global hotkeys are defined ?

That shortcut is not in that menu.
And I'm not sure is it that software or other.

That solve the problem.
I found the right shortcut in menu start and just delete it. :)
Thank you very much for help.

lovelyHanibal said:

That solve the problem.
I found the right shortcut in menu start and just delete it. :)
Thank you very much for help.

I have a few of these as well. I tend to open the properties (as shown in logicearth's post), click in the field highlighted in that screenshot and press backspace to delete the OS shortcut key. Then I use the general tab of that same proerties window to make the shortcut a read-only file. This usually prevents updates to the program in question from being able to redefine that shortcut key.