MS Office users heavenly use some MS Office specific fonts (like Comic Sans, Webdings), which aren't installed by default on your fresh Ubuntu system. So OpenOffice tries to simulate these with similar fonts, the same applies to the printer driver.
Okay, you could go and setup a font replacement table in OpenOffice, but there's a much quicker way of solving the problem.
Installation of MS Core Fonts
Just install the msttcorefonts package from Synaptic, from the Applications menu or the command line:
sudo aptitude install msttcorefonts