Okay, so, I got this second hand Wacom CTE-640 tablet from my dad. It's in average shape, but that's not the problem. From what I've heard, these tablets should have pressure sensitivity when on programs like Photoshop and stuff. I have Photoshop CS6, and I have been trying the tablet out on it lately, but it has no pressure sensitivity, and none of the buttons on the pen that came with the tablet do anything. It basically just works like a mouse, and nothing else. Why is this?
This is all I have done: I plugged it into a usb port in my computer. That's it. What else should I have done? Is there a driver I need to install?
Oh, and I use Windows 8.