Hi friends, I had a functional requirement of my project to get the text content of any Microsoft Office (xp) related file and show it to the user. I downloaded the Office Xp Primary Interop Assemblies from the microsoft site. I use Microsoft Visual Studio.NET 2003 for development including .NET Framework 1.1. The application runs perfectly at the developers end. Now i need to deploy this application at the customer's box,so i made a deployment project which had installed all the assemblies in the Global Assembly Cache and it also made entries in the registry ,now the problem is that if the customer's box has not installed Office xp then the project shows me a message that CLSID(0000..} is not registered or valid. I checked lots of forums, and websites they pointed it out as a bug. Please help me ... Thanks in adavance Kunal Ramesh Lalwani Software Developer Fahm Softwares India