>I use to build my pages with frames
> Now I realise that search engines do not
> show only my mainframe but all my frames.
>
> For e.g.
>
> If I have a page called top which contains only the name of my
> side, the visitor enters there and goes to nowhere.
>
> How to prenvent search engines to point to my frames ?

Access can be controlled by use of a file called robots.txt :

http://www.searchtools.com/robots/robots-txt.html

This must be there when you first submit your site, I'm not sure what can be done once your site has been submitted & the search engines are already listing the pages you don't want to be listed.