Maybe you can find something here that will help.
http://msdn.microsoft.com/en-us/library/bb268022.aspx
"Gaetano Liberto" wrote:
> Hi,
> I have to create an Outllook task from Excel. Basically. For Example,
> suppose that in the cell A1 there is the value "Ciccio" and suppose that
> "Ciccio" is the name of an user of the domain. Now, suppose that in the cell
> A2 I write the value "01/01/2010 15:20:00". When I save the value of the
> cell, I want to create an Outlook task for the user Ciccio for the 01/01/2010
> 15:20:00.
>
> How can I create this?
>
> Thanks in advance.
>
> Gaetano