Microsoft .NET/COM Migration and Interoperability

Microsoft .NET/COM Migration and Interoperability: "It is likely that you have traditional Active Server Pages (ASP) and Component Object Model (COM) applications that you will want to use for some time after the Microsoft® .NET Framework and common language runtime (CLR) are released. You will want to take advantage of new functionality exposed by the CLR, and reuse existing components from the managed code that you develop.

The interoperability features of .NET allow you to work with existing unmanaged code (that is, code running outside the CLR) in COM components as well as Microsoft Win32® DLLs. It also allows you to use managed components from your unmanaged, COM-based code. These features allow you to choose if and when to migrate existing unmanaged code to .NET. "