On Thursday, April 3, 2014 11:49:50 AM UTC-6, wrote:
I am using Excel 2007 and I am able to enter up to 8 levels of nesting, no more.

Save the file as an excel workbook (top most option) assuming you have the latest excel and you can enter up to 65 'IF' statements...as opposed to 6-8 whatever it is for excel version 2003