Remind me how to do this in CS5

I remember seeing a tutorial on Lynda.com where you can have two windows is Ps of the same image. One is zoomed in to whatever you need it to be and the other one is a standard view so you can do a detailed pp really close up and next to it in a seperate window you can see the results in a 'normal' view.

Can anyone remind me and the others where to go and what to choose to be able to do that?

Thanks a lot

Ok, I remember now,

Go to 'Arrange Documents' icon, click on 'New window' and zoom in the other window to whatever you want.

Another (simpler) option, that also works dual screen, would be to drag the "Navigator" palette big.

Think its zoom or match zoom, then click the one you want to fit screen