Register dll to use in SSIS Script Component
You don't need Visual Studio, you need the Windows SDK. You can use MSDN to find the SDK matching your platform. The assembly has to be strongly named and can only be added to the GAC using the gacutil /i your.dll command or by using a Windows installer package. Prior to .NET 4.0 you could drag and drop the dll into the C:\Windows\Assembly folder but this is now obsolete.