There is a method to create a namespace extension rooted in a particular folder.
It involves creating folder with a name like:
My Custom NSE.{785EE551-DEE1-4F57-A8C9-0EF76F346A29}
And Windows Explorer will automatically host the NSE of that clsid at that location.
But for the life of me i cannot find the syntax anymore. It used to be on MSDN in the namespace extension documentation, and it listed the 3 ways to get your namespace into Windows Explorer - that this was one of them.
What's the syntax - it's driving me crazy!