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I can't believe I'm stumped on this, but I can't find it in Preferences or Help: how do i change the border of the active cell in Excel 2008 (that is, the selected cell or range)? I can hardly see which cell I'm on with the default "light blue on white background" dotted line, and want to change it to something like a thick solid line (as I had in Excel for the PC). Thanks for any help.