How many of my pages should I post the necessary Meta Tags? Previously i thought that i should only post them on the index page, now i am thinking otherwise. Whats your thoughts?
If you want the other pages to be indexed by the search engines then yes I would add them to every page.
Here is a link to the META tags that will actually do something for you. If you can do some server side scripting make one file with the meta tags and include it in all the pages with an include statement.