Hi, from what i understand about search engines, they typically scan the first page and it is very important to get as many of the keywords onto the page. This doesn't mean listing them out somewhere as the search engine algorithms will work that out and "downgrade" the site/page. But you certainly need to get the words you want onto the fist page. Also, you need to be adding and changing content on your site which will build up a list of words and hits from the various search engine bots.
There's a great book called " Search engine Optimization - An Hour a day" that may help you to re design your pages to get best effect from search bots.
There are also people who provide a service and run a scan on you website which gives a report on whether it is structured to get the best from search engines and user friendliness.
Hope this helps
