How do I preview & edit with the correct aspect ratio?

How do I get PS to correctly represent the target device's aspect ratio (e.g. a square pixel printer) on my monitor (rectangular pixels)?

Any clues welcomed - Accurate colour profiling is all very well - but I cant even see the correct shapes in PS yet!
x-posted: comp.graphics.apps.photoshop,alt.graphics.photoshop

I suppose you need to visit Image>Pixel Aspect Ratio in CS.

otto wrote:

How do I get PS to correctly represent the target device's aspect ratio (e.g. a square pixel printer) on my monitor (rectangular pixels)?
Any clues welcomed - Accurate colour profiling is all very well - but I cant even see the correct shapes in PS yet!
x-posted: comp.graphics.apps.photoshop,alt.graphics.photoshop

Upgrade otto.