convert code from .NET 1.1 to 2.0 by using ServerCertificateValidationCallback   

I have the following function to call net service in .NET 1.1 version.
It works great. System.Net.ServicePointManager.CertificatePolicy is
obsolete and it's suggested to use ServerCertificateValidationCallback
instead in .NET 2.0. I have tried to convert this code into .NET 2.0
version but no success. Could anyone please help me out? thanks,


public static Request GetData(string s1, string s2)
        {
            RequestService nws = new RequestService();

            System.Net.ServicePointManager.CertificatePolicy = new
TrustAllCertificatePolicy();

            Request a = new Request();
            RequestPub b = new RequestPub();
            a.mrn = int.Parse(s1);
            a.epi= short.Parse(s2);
            a.tatus = 0;
            try
            {
                System.Net.CredentialCache cache = new
System.Net.CredentialCache();

                cache.Add(new Uri(nws.Url), "Basic", new
System.Net.NetworkCredential("****", "****"));

                nws.Credentials = cache;
                b = nws.CreateRequestPub(a);
                return b;
            }
            catch (Exception ex)
            {
            }
            finally
            {
            }
            return b;
        }


 public class TrustAllCertificatePolicy :
System.Net.ICertificatePolicy
    {
        public TrustAllCertificatePolicy()
        { }

        public bool CheckValidationResult(ServicePoint sp,
X509Certificate cert, WebRequest req, int problem)
        {
            return true;
        }
    }

date: Mon, 30 Jun 2008 04:44:24 -0700 (PDT)   author:   unknown