User-Mode Linux skas Page: user-mode-linux.sourceforge.net/skas.html
User-Mode Linux Home Page: user-mode-linux.sourceforge.net
Blaisorblade's UML Page, Home of the skas Patch: www.user-mode-linux.org/~blaisorblade
Manoj Srivastava's SELinux on UML How-To, which includes useful setup instructions even if you don't want to use SELinux: www.golden-gryphon.com/software/security/selinux-uml.xhtml
The User-Mode Linux Wiki, containing many useful how-tos and links: uml.harlowhill.com/index.php/HomePage
User-Mode Linux HOWTO, Section 2.2: user-mode-linux.sourceforge.net/UserModeLinux-HOWTO-2.html#ss2.2