http://www.google.com/support/websea....py?answer=873
MAKE SURE YOU READ THE LINK ABOVE: SNIPPET BELOW:
Google Web Search is customized for a number of countries and regions across the world. For example, Google.fr provides search results that are most relevant for users in France; Google.co.jp is the Google domain for Japan. We try to direct users to the site that will give them the most relevant results.
Changing your settings
If you'd rather use a different Google site, like Google.com, no matter where you are, try one of the following tips:
Click the Google.com link on any other domain.
Choose a Google domain manually by visiting the Language Tools page (the section with the flags).
Bookmark
http://www.google.com/ncr. This is an alternative web address for Google.com that always takes you to Google.com without redirecting you.
Make sure your browser's cookies are enabled
Your Google settings are saved in a cookie, so if cookies aren't enabled the preferences you pick won't be saved. Learn how to turn on cookies in common browsers.