If formula using dates

Trainer2010 - Feb 10, 2015 at 01:50 PM
I have a spread sheet using projected dates for next training. I'd like to run an "if" formula that would fill the cell red when dates are past due (current date).
For example, a staff took a course last January 2014. I want the spread sheet to return a red fill on that date based on the day's current date.