There is a new format wallpaper now available (free) on the club website for widescreen laptops or screen (1440 x 900) as are the others sizes in both BMP and JPG formats:
http://www.lanciamotorclub.co.uk/wallpaper/oct2009.htm (Thanks Will
)
I download the calendar wallpaper every month for my work laptop, I often wonder how many others download it and which format and size is most popular, I would think JPG is the most popular format whether you are a Mac or PC user.