Requirements
Microsoft Windows 2000/XP/Vista, or Linux. If you are having trouble
with the Linux version, try the Windows version, it usually works better.
A broadband internet connection to download the distribution's .iso
file (unless you're using pre-downloaded files)
Features
UNetbootin can create a bootable Live USB drive, or it can make a
"frugal install" on your local hard disk if you don't have a USB drive.
It can load distributions by automatically downloading their ISO (CD
image) files, or by using existing ISO files, floppy/hard disk images,
or kernel/initrd files, for installing other distributions.
Built-in support for automatically downloading and installing Ubuntu,
Fedora, Debian, openSUSE, Gentoo, Slax, Mandriva, FreeBSD, NetBSD,
CentOS and many other distros.
http://unetbootin.sourceforge.net/
--
Wataru Tenga
Looks like Qemu is worth trying for a "Linux system on a USB stick"
It has a virtualizer and an emulator mode, the former being much quicker
apparently ("near native" they say) but requiring an "accelerator" on
the host computer. So, whichever way, it looks like it's hard to carry
around a portable system to use on an ordinary PC without changing that
PC in some way.
Kevin Kirton
Australia