Like my friends that are Windows power users and just recently managed to install a ubuntu firewall. It took them all day but they managed. They're a little intimidated, but also intrigued, by the many unfamiliar dialogs, concepts and tools. They will appreciate Linux when a few months have passed and they realize how well it works for them. They have several Pentium boxes. They don't like command lines. There is no reason they shouldn't run LinuxBIOS! :)
dos is a horrible command line. no wonder they dont like it.