Installing Desktop Couch
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
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.
The Gentoo repository for desktopcouch is at http://gitorious.org/tante_overlay. Gentoo users can just run
layman -a tante && emerge desktopcouch to install.