Using Excel 2007

I've been using Excel for awhile

I didn't realize how poorly I was using it until I came across Chandoo.org

So in an effort to correct the error of my ways, I am working through some of the tutorials on the website.

For the Sales Dashboard Tutorial, I got the formula working except for the special characters. I tried inserting the correct characters from Insert..Symbol..Wingdings3, no luck. The Insert..symbol is ghosted out.

I also tried inserting the symbols in helper cells, copy the symbols, so I could paste inside the formulas. No luck, when I paste, the charcter I used for a placeholder while typing the formula simply disappears but the new symbol is not in its place.

Any thoughts as to what I am doing wrong?

Many thanks,

-winston