Calling a PageMethod in VB.Net 2.0 with JQuery not firing the page method.

Hi,

I have code that I tested in a C#/Asp.Net 2.0  web app to call a page method using JQuery and it worked perfectly, now I am trying to do the same in VB.Net/Asp.Net 2.0 and it won't fire the page method. I keep getting undefined javascript error which makes me think it can't find or access the Page method. If I were calling this with MS Ajax is there something else I need to mark the method with?<WebMethod()> _
Public Shared Function GetMailPieceGroupsByAdFundTypeId _
(ByVal adFundTypeId As Integer) As String

'More code in here


End Sub

$.ajax({
type: "POST",
url: "MyStaticPage.aspx/GetMailPieceGroupsByAdFundTypeId",
data: myDataToSend,
contentType: "application/json; charset=utf-8",
dataType ...