how to redistribute Microsoft.VisualStudio.OLE.Interop.dll

I installed 'Visual Studio 2010 SP1 SDK' so I could use Microsoft.VisualStudio.OLE.Interop.IPersistStorage and it works like a charm.  I am now faced with a problem of redistributing this dll; can I redistribute it?  Our software is installed on end user machines who will not have Visual Studio installed so the DLL will not exist prior to installing our software.

thanks