Store Location in for X509 certificate to use with Web Service

Hi There,

I need to be able to pull a certificate out of an Active Directory
Certificate store, rather than a local file-based store (such as Local
Machine or Current User), With .NET 2.0 and WSE 3.0.

I am using the System.Security.Cryptography.X509Certificates namespace, but
the only enumerated values for StoreLocation are CurrentUser and
LocalMachine.

Is there any way of fetching the certificates from the Active Directory,
which I would imagine is the recommended way of storing certificates in an
enterprise scenario?

Many thanks for any suggestions offered.