Dave, I know how to check for free disk space on Windows XP, but how do I check for the amount of free disk space available on a machine running Linux (CentOS, Fedora, Red Hat, Ubuntu, etc.)?

I have a Virtual Private Server or a dedicated server running Linux, but I'm not sure which version of Linux (Fedora, CentOS, Debian, etc.) the server is running. How do I find out?

I just bought a slick ASUS Eee PC netbook, model 1000HA, and want to configure it to work with both Microsoft Windows XP, which is already installed, and Ubuntu or some other flavor of Linux. How can I do that without having to reinstall WinXP?

I have 2 Ubuntu Dapper machines at home. One is going to a college dorm with may daughter in a couple weeks. I can get her desktop on my computer through VNC here at home. It's using port 5900.

Is there a way to know whether I'll be able to reach her machine through this port when she's at college? I have no idea how they manage their network - nor do I care to ask! On a quick look, I could not find how to get her VNC server to listen to a different port - or maybe this is done through ssh?