Two articles about Google Services.

Using the Google Search Web Service in ASP.NET (VB.NET)
http://www.bbits.co.uk/PlayGround/GoogleSearch/GoogleService.aspx

Integrating Google Search using the Google Web Services
http://www.c-sharpcorner.com/UploadFile/mchandramouli/IntegratingGoogleSearch11242005033911AM/IntegratingGoogleSearch.aspx