You can get the same functionality with Linux, but perhaps Knoppix isn't the best choice for you here. Don't get me wrong, its a great distro, but you may be better off with a distribution like Mandrake, Red Hat or SuSE.

With hard-disk installations of Knoppix, you dont get much choice of packages when you install, whereas with others, you can choose what you want to install. Take a look at www.distrowatch.com for a comparison of different distribution.

Knoppix's strength lies in the fact that it loads from cd without touching the harddisk, and can made an easy Debian-like installation, from which an experienced user can customise it.

I'll probably get flamed for saying that Knoppix has these limitations, but I do believe that it is probably safer to stick with easy desktop-orientated distros for newbies.