You can tell with Google Webmaster tools.. If you have not joined up then you should consider it https://www.google.com/webmasters/tools/docs/en/about.html Cheers James
In addition to Webmaster tools, there are a few keyword checking tools that you can use to manually check your site's ranking for various keywords.
Also, why not try Google Analytics? You can track all your sites visitors and information and incoming refers and search engine hits, from there you can do future reach while expanding your ability to view your visitors information http://www.google.com/analytics
From google webmaster top search queries, you may see others search some keywords from google, and your website appears between the results and also you may see the rankings, Another way to check the No.1 ranking maybe is just check your domain in Google.
I just have to reply after seeing so many mis-spelling errors and grammatical errors. You guys do know that Google and the others use a search bot that is programmed to see such things as well as to parse out whether the paragraphs and sentences are relevant. If you can't type, hire a secretary who knows how to type (and spell). Believe me, the search engines depend on this since they are REALLY a computer program. (trust me...they will find this particular post quickly). Jesus does Live!