I'm sorry if this is common knowledge, but I'm thinking of getting a tablet PC with a capacitative touch screen, so I'll have to use a special stylus, not the standard pressure-sensitive magnetic kind I'm used to. Is there a way for inkscape to simulate pressure-sensitivity, such as varying brush stroke according to speed/direction? I need to know this before I buy anything. I'm planning on putting linux on it and using Inkscape instead of Illustrator (which I am used to), so this is kinda new to me.

Also, does anyone use a tablet PC or a computer with a capacitative/CAPTIVE screen/stylus? How does it work for you? Is it worth it?

Welcome to InkscapeForum!

Inkscape doesn't have any pressure sensitivity by itself. A graphics tablet is required for that. I don't know about a tablet PC. If it's a touch screen, I would assume so. So Inkscape plus tablet, yes you can have pressure sensitivity. But not with Inkscape alone.

I don't use a tablet, so I can't answer your other question. But good luck

No, the tablet isn't pressure-sensitive. It has only one degree of sensitivity: on/off.

What I'm talking about it a varying line width as if I was using a quill pen in real life, like this example:
http://shawnmccauley.com/news/wp-conten ... Angel1.jpg