Lloyd,
I would not recommend it, but if you want to give it a try have a look at
Chip's site here
http://www.cpearson.com/excel/BlinkingText.htm

Signature
Paul B
Always backup your data before trying something new
Please post any response to the newsgroups so others can benefit from it
Feedback on answers is always appreciated!
Using Excel 2002 & 2003
> If Cell a1 > 50 Then Cell a1 must flasher a different colour