Users of Blackboard Collaborate
The term tablet has been applied to a variety of things. If you mean a pen tablet input device, I can help.
I use a Wacom Intuos 3, but a Wacom Bamboo is cheaper and works just as well. I have the Intuous level because I also do illustrations and paint digital portraits.I have had mine for probably 4 years and use it all the time. I typically don't even have a mouse attached to my system. The pen does all I need besides my keyboard.
We did a presentation where tablet were a primary topic. You might want to watch it. The recording is at ...