CS -- "pixel aspect ratio correction" -- how to turn off?

Using CS...

Windows XP Home built-in fax program generates previews as TIFF files. When I ask the fax program to show a preview, it opens CS to display the fax. I'm getting this message when CS is opening the fax preview: "Pixel aspect ratio correction is for preview purposes only. Turn it off for maximum image quality."

Is that a CS message, or something from the XP fax program? How do I turn it off?

Thanks.

John

It's a CS message. Click the box that says 'don't show again' the next time the dialog pops up.