Hi TK,

Am Fri, 7 Oct 2011 13:09:39 -0700 (PDT) schrieb Cortez:

The number format would leave treat positive and negative values
normally, would display a blank cell if the value is zero, and would
display a blank cell if the cell value is text "null", otherwise if
the cell value is any other text it would display that text.

1,-2,0,null,X would become 1,-2,,,X

try it with custom number format:
#,##0;-#,##0;;@
For text "null" use the conditional format:
if cell value is text "null" then font color is white


Regards
Claus Busch
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Win XP PRof SP2 / Vista Ultimate SP2
Office 2003 SP2 /2007 Ultimate SP2