Feature Detection?

Feature Detection?

Well first off I'd just like to say I'm a proud newcomer to the site, and hopefully I'd get to know the people here, and make some friends.

Now I'm new to JQuery I've gotten into it here, and there, but for the past month I've been working really hard on learning it non stop, and being pretty good at HTML, and CSS, I thought I'd take the step into JQuery.

I really love to learn, and found the OS, and browser detection here and I thought that was really cool, and got me thinking. Can JQuery detect the hard drive space of someones computer, amount of ram, what motherboard their using, graphics card, etc:???