Google co-op search customisation

how does one incorporate their header into the new google in-site search

[wheeler]

Today I heard about the google co-op search [google.com...] and tried it out on my site.

My question is, I see that the search is by default sent to google.com where my stylised results page resides. How does someone like macworld.com have their own header in the results so it looks as though it really is part of the site, and plus its still on their domain?

[wheeler]

no worries i've answered my own question - its on the code page