I've knocked out a 45 minute video tutorial on rigging a hand and automating the motion with sliders. Apart from going through how to rig a hand without using IK, I wanted to go into in some depth doing vertex painting.
I've done this one in 8.5 using std bones and XPresso so no modules required. rel 9 owners with Mocca 2 could alternatively use PoseMixer to control the hand although this would mean multiple copies of the entire body mesh would be required.
Akthough I've only animating the bones moving one axis you could quite easily set up sliders to make the fingers splay outwards. An alternative to having a slider for each finger would be to have one and the hand makes a fist.
Have fun. I'm hoping to move on to a Mocca 2 rigging sometime in the future as I'm keen to show what a great piece of kit this is!!
Owners of CE6 and XL 7 may benefit from the vertex painting sections as this hasn't changed.
Flash format. 45min 27 sec in duration. The videos are zipped up and come in 2 parts, 18mb & 19mb. Unzip the files and open the html file in your browser.
Look out for the tutorial in the tutorial section under Animating / Bones & Rigging