Please see my other reply to your question:
<a href="
http://www.rings-things.com/forum/index.php/topic,2347.html" target="_blank">posting 2347[/url]
I would get the book and hopefully the workshop in hand before you spend money on tools - make sure you buy the right things that way.
Metal around stones is done with wire wrapping or with bezels. Bezels are built by soldering them to a silver backer or design and the stones are cold mounted into the bezel.
There are methods for firing some stones into the metal clay materials like Art Clay Silver - but there are limitations and considerations for this - there is more information in the Art Clay Silver parts of this forum.
Hope this helps</font>
(edited to fix broken link)