In case anyone wants the commands:
I'll assume you're starting with a fresh system.
Download the installer file to your home directory and run it.
Open the newly created BOINC folder and open a terminal there.
If the terminal opens in your home folder just cd BOINC to get to the right one.
Code:
sudo su
apt-get update
apt-get install boinc
/etc/init.d/boinc-client stop
cp boinc boinccmd boincmgr /usr/bin/
/etc/init.d/boinc-client start
exit
If there are any major issues just post 'em up.