outlook can do very limited negative calculations, using 'before' - but it's
very spotty and doesn't always give the expected results. write it out as
"3 weeks before", not "3w before". if outlook doesn't meet your needs well
enough, you can use formulas in Excel to calculate the dates.
See points 5 and 6 for more info:
http://www.slipstick.com/emo/2005/up050818.htm#8

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Diane Poremsky [MVP - Outlook]
Author, Teach Yourself Outlook 2003 in 24 Hours
Coauthor, OneNote 2003 for Windows (Visual QuickStart Guide)
Need Help with Common Tasks? http://www.outlook-tips.net/beginner/
Outlook 2007: http://www.slipstick.com/outlook/ol2007/
> There are many posts about counting forward a number of days, but has
> anyone
[quoted text clipped - 10 lines]
>
> Barbara B.