KDE Upgrade and Newbie Question

Hi folks, How do I upgrade to KDE 3.1.4 ? I have just tried apt-get but it gives me only version 3.1.3. I need to download it form kde.org? Isn't it soo many files? Anothr question: There is a way I can right-click a image in Konqueror and set it to desktop background directly, like Win XP does? Thanks for your time, Bruce "Sinner"