Thanks, but that's not what I meant, sorry - I don't have a Facebook page, only a blog.
I wanted to get a "like" button on every post on my blog, so people could hit it and link it to their Facebook pages. Turns out that I have managed it - but you can only see it if you view the individual post, rather than the whole page. So it's a bit pointless really, as people mostly view the whole page. Doh!
thanks for your reply though