Keyword research will help you to establish keyword hierarchy. Start with your top terms and create or locate pages that are optimized for those terms. Also look for pages that aren't indexed.

Thank you very much! The point is that I'm trying to find pages that are already indexed by Google so that i could place some link to this pages and this way get a better position.. don't you know any tool that I can use for this purpose?

welcome to WebmasterWorld [webmasterworld.com], trevor mcgee!

the following search will give you a list of sites indexed by G for your domain:
[google.com...]

Look for pages that Google has already considered relevant for your target keywords to increase their position. Pages of your site can be located at the tenth, twentieth or thirtieth page of the search results and you may not get traffic for months and months, so you will never find them with the help of the statistics systems (e.g. Google Analytics) and systems of SERP analysis will not show them because they are limited to «sells» depth of issue, because the study focused on the strategies of competitors. You may detect pages that are deep in the search results with the help of other tools - enter your domain and select the pages and the keywords with the maximum potential.

[edited by: engine at 3:32 pm (utc) on July 24, 2009]
[edit reason] No specific tools, thanks, see WebmasterWorld TOS [/edit]