You can't colour an individual gridline, if that's what you're trying to
do. However, Jon Peltier has instructions for adding a horizontal line
to a chart:

http://www.peltiertech.com/Excel/Cha...s.html#AddLine


hhhggghhh wrote:

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Debra Dalgleish
Excel FAQ, Tips & Book List
http://www.contextures.com/tiptech.html