You can do it with formatting Format, Cells, Custom
Make the 3rd operand empty
so if you General change it to General;General;;
Also of interest Tools, Options, View
[x] Zero Values should be checked to show zero values
but you can uncheck it and zero values will not show, but you
won't know if it is zero, or empty, so it would be better to
do your exceptions with formatting.
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HTH,
David McRitchie, Microsoft MVP - Excel
My Excel Pages: http://www.mvps.org/dmcritchie/excel/excel.htm
Search Page: http://www.mvps.org/dmcritchie/excel/search.htm