VS 2010 Errors With Creating Web Service

I am new to the whole ajax/jquery/web service scene. I am trying to create a web service to pass back data for a jquery post and currently have two errors. It appears there are examples the web but must in c and looking for something in vb. Below is my web service. See in bold the error descriptions and in red the items visual studio is highlighting.

WordsService.asmx
HTML Code:
<%@ WebService Language="VB" CodeBehind="~/App_Code/WordsService.vb" Class="WordsService" %>
WordsService.vb
Code:
Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.Runtime.Remoting.Services
Imports System.Collections.Generic
Imports System.Data.SqlClient
Imports System.Data
Imports System.Web.Script.Serialization
' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
<System.Web.Script.Services.ScriptService()> _
<WebService(Namespace:="[URL]
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Public Class WordsService
Inherits System.Web.Services.WebService
Private _sConn As String = ConfigurationManager.ConnectionStrings("DB").ConnectionString

'1) Type 'ScriptMethod' is not defined.

'2) Value of type '1-dimensional array of String' cannot be converted to '1-dimensional array of 1-dimensional array of String' because 'String' is not derived from '1-dimensional array of String'.

<WebMethod(Description:="Gets the books matching part of a title."),
ScriptMethod(ResponseFormat:=ResponseFormat.Json)> _
Public Function GetBooksByTitle(ByVal strTitle As String) As String
Dim myConnection As SqlConnection = New SqlConnection(_sConn)
Dim objCommand As SqlCommand = New SqlCommand("SELECT * FROM table WHERE field like '%" _
+ (strTitle + "&' ORDER BY field;"))
Dim dsSearch As DataSet = New DataSet
Dim sdaSearch As SqlDataAdapter = New SqlDataAdapter(objCommand)
sdaSearch.Fill(dsSearch, "english")
myConnection.Close()
' Create a multidimensional jagged array
Dim JaggedArray()() As String = New String((dsSearch.Tables(0).Rows.Count) - 1) {}
Dim i As Integer = 0
For Each rs As DataRow In dsSearch.Tables(0).Rows
JaggedArray(i) = New String() {rs("BookNum").ToString, rs("Title").ToString, rs("Author").ToString}
i = (i + 1)
Next
' Return JSON data
Dim js As JavaScriptSerializer = New JavaScriptSerializer
Dim strJSON As String = js.Serialize(JaggedArray)
Return strJSON
End Function
End Class

Here is the article I am currently following for example: How To Create A JSON Web Service In ASP.NET.