Same as title, want to kill alt-tab, etc.
Check this reference,
Set to disable, Reset to enable.
You will also find apps like this one, but if it is a simple registry change,
Well, ask a question at a time, for the one in the title:
The registry below will work for windows hotkeys, if you are thinking of hotkeys for a particular window (application) then you just have to check the application's settings.
As for hiding title bars, it kind of seems you are looking for something like hideanywindow
If you want to do it yourself (coding) you can try having a go at reading the win32 API
To disable hotkeys:
found at: pctools