If you don't want to reinstall your PC, you could find a distribution of Linux called PhatLinux (www.phatlinux.com) which allows you to install linux within your WIndows portation. I think it's easier for you. Good Luck
I need a UNIX environment to learn those UNIX commands (such as vi). Who knows where can i telnet and is there a free web-site open for use? thanks. Happy new year!