Googlebot (Google's Spider) doesn't follow the "http/1.1 302 Found" status code (resource temporarily moved). Instead you should use a "http/1.1 301 Moved Permanently" header to make Google follow the redirect.
To make the long story short: If you're using PHP to do the redirect (and many are using PHP these days) you should add the status code header manually because PHP sends a 302 Found status code by default.
I assume that your server supports files with .php extension. If not, you won't be able to do this tutorial. For more info on how to install PHP on your PC go to http://www.php.net
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