Scrollback in GNU Screen

This has always evaded me: How do you do scroll up the screenbuffer when using screen?  Found the answer right here:

http://www.linuxscrew.com/2008/11/14/faq-how-to-scrollback-in-gnu-screen/

I've tried the Ctrl + A + [ method; but not Ctrl + Esc as I'm using Windows as my main machine and Ctrl + Esc can also be used as the Windows key.

Just hope I remember this :)