Unspecified error

Question

Hi All,
I am using Vs2003 for my C#application.In this i need to use microsoft powerpoint component.For this i have used the dlls office.dll which is available along with the network framework and Microsoft.Office.Core and Microsoft.Office.Interop.Powerpoint.dlls.

Now i have migrated my office tools to MS office 2007.
Application is giving some Unspecifier error while am trying to use powerpoint option in my application .So What should i do now.Plz give a suggestion to me