We just unveiled our free tool Deadline & Date Filing Calculator 1.0. This is a tool designed to be used by legal secretaries, paralegals, attorneys, et al for calculating date distances. Just plug in the starting date and the number of days before or after and watch the magic happen. It even lets you know if your calculated date falls on a weekend or a holiday and adjusts accordingly.
Check it out here: http://www.toddolivas.com/court_reporting_articles/deadline-calculator.asp