This was done using the free software on Picassa from Google. Picassa is a great picture-organising tool, I don't know how I'd keep track of my pics without it - it's super-fast for browsing images and has some really good picture-editing tools. For some of the simple fixes - cropping / straightening / lightening / darkening / sharpening / saturation / etc - it is almost as good as PhotoShop and nowhere NEAR the mucking about.
Who said there's no such thing as a Free Lunch??! lol.