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

--
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/

"Barbara B." wrote in message
...
There are many posts about counting forward a number of days, but has
anyone
been able to start at a "due date" and put a number of days in that you
want
to count back to see when you have to start the task? I have a group of
people releasing documents and they want to know when they have to start
reviews, etc. based upon when the document has to be released.

If Outlook cannot do this and anyone knows of a third party tool, please
post that as well.

Thanks,

Barbara B.