Hi Laura,
"The Date" is a somewhat simplistic expression when talking about Project,
each task has at least 70 properties that are dates!
So, it all depends.
If you talk about a custom field (one that has a name ending on a numeric
such as Date7), it can be done because these fields can contain a formula;
so you could put an OLE link from the excel value (only one, but you could
make the sum with an Excel formula in Excel) to a Number fielsd in Project
and put the appropriate formula in the date field.
But I'm afraid you talk about a date field that Project uses for its
calculations such as Start or Finish... in that case it can only be done
through automation for instanc a VBA procedure.
Hope this helps,
--
Jan De Messemaeker
Microsoft Project Most Valuable Professional
http://users.online.be/prom-ade/
+32-495-300 620