I need to add a blinking red, yellow and green light to an excel

[Guest]

I need to add a blinking red, yellow and green light to an excel spreadsheet.
I've inserted pictures from clip art. Is there anyway to animate the
pictures to make them blink in the spreadsheet?

 

[Guest]

Use a modification of the blinking text approach:

http://www.cpearson.com/excel/BlinkingText.htm