The data I have is the following

   Date         Number of days
(MM/DD/YYYY)
------------------------------     
01/01/2006           150
01/05/2006           80
02/01/2006           10

I'd like it to to indexed so that the number of days is added to the date. This way I'll know just by looking at the first record (with that index) if some action has to be taken because the number of days since a given date has elapsed.

When browsing that data the result would be:

02/01/2006           10     Date + number of days is 02/11/2006
01/05/2006           80     Date + number of days is 03/26/2006
01/01/2006           150    Date + number of days is 05/31/2006

Easy way out of this?