Google webmaster tools-verify ownership

I am trying to either insert a meta tag in header or upload a file to verify ownership of my domain for Google webmaster tools. Their example of where to insert the meta tag is not very helpful. I’ve tried going to the stylesheet header to find a place to insert and can’t. Then I downloaded their %$#$*& HTML and tried to insert it into my static page, created a unique post for it and inserted it there. Nothing works. I get a 404 error when I try to find it. Any thoughts.

Thanks