date difference in report

Hi friends,

please tell me the steps how to display differenece between 2 dates in a report.Iam using order date from sales header table and posting date from Sales shipment header table in a report and want to display the difference between these 2 dates for every record.

Just do Date1 - Date2


Thank you.Iam having some more doubts regarding a report.Please can you clarify them.Can i have ur personel Id so that i can ask you.Else if you have any online chat id. If you never mind please give me ur personel id.