Problem with the search engine program.

Hi,
I,m still new in the web design & programming..
I have a problem with the search engine.. it can't search normally..
The problem appear like this..
Google Error
Forbidden
Your client does not have permission to get URL /custom?domains=www.kliuc.edu.my&q=fuzi&sitesearch=www.kliuc.edu.my&sa=Search&client=pub-6320343078573340&forid=1&ie=ISO-8859-1&oe=ISO-8859-1&cof=GALT%3A%23008000%3BGL%3A1%3BDIV%3A%23336699%3BVLC%3A663399%3BAH%3Acenter%3BBGC%3AFFFFFF%3BLBGC%3A336699%3BALC%3A0000FF%3BLC%3A0000FF%3BT%3A000000%3BGFNT%3A0000FF%3BGIMP%3A0000FF%3BFORID%3A1&hl=en from this server. (Client IP address: 58.26.33.165)

Then, i want to know what means => name="client" value="pub-6320343078573340"> ....