Well this is one that comes off the top of my head which is a non-porographic free Wallpaper site based in the UK.
http://www.sexydesktop.co.uk/index_cars.htm
I've put this one in my favourites to use as a test.
And this is the site which I am certain gave me the problem in the first place while ironically looking up how to remove winfixer for a friend.
w w w. download junction.com
(spaces inserted to prevent a direct link)