Installing Desktop Couch
Ubuntu
9.10
Desktop Couch is included in Ubuntu 9.10 by default; you don't have to do anything to install it.
Ubuntu 9.10 flavours (Kubuntu, Xubuntu)
apt-get install desktopcouch
ArchLinux
If you use yaourt, then yaourt -S desktopcouch
to install. If not, download desktopcouch from http://aur.archlinux.org/packages.php?ID=33019 and then follow the instructions at http://wiki.archlinux.org/index.php/PKGBUILD to install.
Gentoo
The Gentoo repository for desktopcouch is at http://gitorious.org/tante_overlay. Gentoo users can just run layman -a tante && emerge desktopcouch
to install.