Page Link Bar Help

A basic question, I know, but it’s driving me crazy. I have a WordPress site with a standard Twenty Twelve theme. At the top, between the header and the header image, is a link bar, with links to the various permanent pages on my site. I want to change the placement of the links – that is, I want the link over on the right of the link bar to be on the left, next to the HOME link.

I know it’s easily done – I’ve done it before on an earlier site – but this time I just can’t work out how to do it.

Help please. Thank you.