I use Google's Picasa to load images from the camera, and also to organize my many, many folders. It seems much faster than the pentax software, and is easier to use and navigate.
It also has some basic photo tweaking features - lighten, B&W, etc... that let you easily and quickly play with your shots WITHOUT modifying the original.
The newest version is also tied in to the online google picture share web albums, which is another nice feature. And, it is free!