Dim conn As New SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Visual Studio 2008\WebSites\Dnn13\App_Data\Database.mdf;Integrated Security=True;User Instance=True")
                    conn.Open()
                    Dim cmd As New SqlCommand("firsttime", conn)
                    cmd.CommandType = CommandType.StoredProcedure
                    Dim obj As Object
                    obj = cmd.ExecuteScalar()
                    conn.Close()
                    If (obj = 1) Then
                        Response.Redirect("http://www.gmail.com/")
                    Else
                        Response.Redirect("http://www.google.com/")
                    End If
					
					
					
stored procedure:

ALTER PROCEDURE firsttime
@IsNewUser bit,
@UserID int,
@Username nvarchar(100)

AS

SELECT IsNewUser from dbo.Users
WHERE  UserID = @UserID and Username=@Username