Robin from The Dreaming.
Lately HoC has been getting a lot of interest in the way we do digital storyboards. There are a number of studios that I know about who are dabbling in digital boards. I first tried it out at Pixar and now I'm implementing it at Blue Sky. I have heard that Dreamworks is trying it out. I don't know of any studios other than HoC who are doing it only digitally. Most studios use Photoshop, though in my opinion it is too slow to have a natural feel. I have heard of one person who does it profesionally in Flash because he can easily flip from one frame to the next. At HoC we like Sketchbook Pro because it's really fast. If you don't want to drop the $650 for Photoshop or the $200 for Sketchbook Pro then you might want to try Art Rage 2 for the measley price of $19.99. Art Rage is a solid program mainly used for painting but still good for doing boards on(thanks Turtle).
After you buy the necessary software you must choose your hardware. Most of the artists at HoC use Wacom tablets (Graphire work just fine). This is the reason we need fast software. If you can spare that cash and buy a Wacom Cintiq you can use pretty much any software for decent results. I use a Cintiq but I have be testing a number a tablet pc's lately and I have found that they work very well. A 21" Cintiq will set you back about $2500. An average tablet pc will be under $2000. That's an entire computer for less than the price of just a tablet monitor. These numbers are very appealing especially considering when we are boarding we typically only use a small area of the screen to actually board on.
Lastly is the actual process on drawing on the computer. You can't get around practice on this point. To get truly confortable doing this you have to adapt your drawing style. A sketchy style does not work very well digitally. A more acurate, efficient style seems to work much better. It will take about two months of solid practice to get comfortable. If anyone has any tips on making digital storyboards easier, I would love to hear it.