Hello,

What is the DB you are using, and what language have you programmed the front-end in?

If you are using PHP/MySQL you may want to check out:

DATE_SUB() in MySQL:
MySQL :: MySQL 5.0 Reference Manual :: 11.6 Date and Time Functions

strtotime() in PHP:
PHP: strtotime - Manual

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Kim Kraft
StudioKraft
http://www.studiokraft.com/
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