How can I create Exchange distribution list inside the GAL using .NET?

using (DirectoryEntry LDAPConnection = new DirectoryEntry("LDAP://OURDOMAIN/CN=" + name+ ",CN=Microsoft Exchange System Objects,DC=ourdomain,DC=com"))
{
    LDAPConnection.AuthenticationType = AuthenticationTypes.Secure;
    LDAPConnection.Properties["msExchHideFromAddressLists"].Value = false;
    LDAPConnection.CommitChanges();
}