Gridlines

[Deborah Mowry]

I have gridlines that run (Y-axis) say from 0 to 100. I want only 1 of them
to be a different colour, or bold to stand out as the target line.
Can I do this? I am using Excel XP

Deborah

 

[Debra Dalgleish]

Jon Peltier has instructions for adding a horizontal line to a chart:

http://www.peltiertech.com/Excel/Charts/ComboCharts.html#AddLine