Everyone is correct here.
As long as you use synaptic, or apt-get, gdebi, they should pull in any dependencies needed.
I actually run a completely different desktop from everyone (most everyone
) on wattOS (I use i3 WM) and I run Libreoffice, truecrypt, pcmanfm, and a myriad of programs without any problems.
Enjoy, and feel free to ask any questions.
biff