PGP in .NET

has anyone done any work with PGP in the .NET Framework?

I have a public and private key. Really, all I want to do use the private key to decrypt files from a C# app. I looked into the RSACryptoServiceProvider class, but I don't see any place where you can specify the keys ... it appears to just create them when you instantiate an instance.

Also, this class looks to take the file in as a byte[]?

Am I in the wrong class for the job?

Thanks all,
Pete ...