Apologies to those who can't extract the large .zip file I've attached above. I forgot to mention that I used the "7-zip" program to compress the files, as it was the only compression program I could find that would pack the .tga file down from 37Mb to below the 23Mb forum limit for .zip attachments. And I'm not sure how compatable the high compression options on "7-Zip" are with other compression programs (but I'm guessing perhaps not very compatable)
You can get the "7-Zip" program here ---
http://www.7-zip.org/
Please post if anyone still has problems unpacking the files, and I'll find another solution. (or a more widely recognised compression program/option)