How to change the keyboard shortcut to cycle among different applications ?

Currently it is set to Command + Tab in my hackintoshed laptop. I have the Command key set to the Ctrl keyboard key. I also have the Option key set to the Alt keyboard key. Being a windows user, i have the muscle memory of using alt + tab to cycle among open applications. So, is there a way I can change Command + Tab to Option + Tab. I do not see this combination in System Preferences -> Keyboard -> Shortcuts