Where can I find the shortcut keys of all the applications?

I tried creating a shortcut key, but now I can't undo it. How do I undo it?

• I was experimenting with launching mediaportal through a shortcut key, so I right clicked on mediaportal, clicked properties, shortcut tab, and pressed number 1 (on my keyboard type of PC remote) for a shortcut key. I was happy to see that it worked. I then tried it with number 2, and it worked. I then pressed backspace on my keyboard so that there would be no shortcut keys, and number 2 went to normal, but now when I press number 1 on my remote or my keyboard number keypad, it still launches mediaportal. I now can not use number one anymore on my remote and my keypad. even though in mediaportal properties where it says shortcut key, it says none. How do I make my number 1 normal again? Also, I tried uninstalling the driver, but could not find it, and instead I accidently uninstalled hp remote solution. What is hp remote solution and do I need that? Thanks for your help

• Answer:

  How about going back to a restore point before you created the shortcuts? You don't say what operating system you have but for XP this link will guide you: http://support.microsoft.com/kb/306084 and for Windows 7/Vista: http://www.howtogeek.com/howto/windows-vista/create-a-restore-point-for-windows-vistas-system-restore/