On my Win8.1 machine, the IE cookie is in:
C:\Users\username\AppData\Local\Microsoft\Windows\INetCookies\Low\
According to Google, for Win7 it's in:
C:\Users\username\AppData\Roaming\Microsoft\Windows\Cookies
C:\Users\username\AppData\Roaming\Microsoft\Windows\Cookies\Low
I don't why you wouldn't be able to paste there, as permissions are open for the user on mine.