set flashing alarm by a date for a text box

[In a quandary always]

For example, I want to set an alarm that flashes my car bill entry a week
before it is actually due. Thank you!

 

[Tom Hutchins]

You can only do that using VBA (macros). These links explain how:
http://www.cpearson.com/excel/BlinkingText.htm
http://exceltips.vitalnews.com/Pages/T0214_Flashing_Cells.html

Hope this helps,

Hutch