Now, there’s no way you can miss installing it to your site. Agree, that it isn’t easy for all, you might have to find a work around to get it fully integrated with your site, but now even your web host might give you assistance installing it to your site.

Many hosters have enabled Webmaster Tools and Custom Search in their control panels. Aplus.net is the most recent addition to Google’s list of partners that have integrated Custom Search into their service using Google Services for Websites.

If your host doesn’t support it, do it the manual way, its not difficult as it sounds.