Forgive my ignorance, try not to laugh at my question - this is my first time developing in the MS world.<BR><BR>I need a dll that&#039s part of something called the ADSI Toolkit (also known as the ADSI SDK). The dll is called adssecurity.dll, I think it was written by microsoft, but I can&#039t find a place to download it on their site. How do I download microsoft SDKs and the stuff inside them? Do I have to buy them? Details, details.<BR><BR>Thanks