Basket is a program like One Note or EverNote.
sudo kwrite /etc/apt/sources.list
deb http://download.tuxfamily.org/eeepcrepos/ p701 main etch
You can leave the two Asus Repositories but comment out (by putting a # before them) all other Repositories in your sources.list file. You only need the community repository for this to work and some of the other repositories will stop it working.
sudo apt-get update
sudo apt-get install basket
This should install Basket on your system
If you want to add icons/shortcuts to Easy Mode, Noah98 has created Basket Icons which can be found in the forum thread Icons for Easy Mode at post #88 , e.g. You can learn how to install the icons from Adding icons to Easy Mode on this wiki.