shedifice on "Link to main site problem."

Hi,

I have 'www.mysite.co.uk' and my zenphoto setup at 'www.mysite.co.uk/gallery'

When I set the website URL in options-gallery to 'www.mysite.co.uk' it does not link to the correct place. When I go to the gallery and click on the link back to the site it creates the URL 'www.mysite.co.uk/gallery/www.mysite.co.uk'

so its is appending the inputed URL to the zenphoto location URL.

What I doing anything wrong?

Thanks for any help in advance.

L.