.rar is a file type rather like a .zip archive - it holds compressed versions of files which then have to be uncompressed. If you're using Windows, I thought that .rar files were recognised? On my Mac I long ago downloaded a free utility (UnrarX) which uncompresses them. Maybe there is a Windows version too? Would there be any chance of having these various file extensions on a sticky (in useful references) that people can add to together with a solution to opening the files? Someone sent me an image with a psd(?) extension a while back, but neither I nor the windows program on my computer recognised it, so the image had to be binned. It wasn't the first unopenable file received as Baldwins also format their files in some unintelligible way. Obviously the problem is proprietary software, but nobody is going to buy every available program just to view an image which may not appear. Something along the lines of Adobe reader which allows you to read only would be useful.