Although it's recommanded to use LibreOffice, you still can install MS office in Ubuntu with PlayOnLinux using a CD or Wine using an .exe file which is your case.
Try to follow those guides. Office 2010 , Office 2007 .
Install mesa OpenGL
sudo apt-get install mesa-utils mesa-utils-extra libgl1-mesa-glx:i386 libgl1-mesa-dev
then create a link to OpenGL 32-bit library sudo ln -s /usr/lib/i386-linux-gnu/mesa/libGL.so.1 /usr/lib/i386-linux-gnu/mesa/libGL.so and
sudo ln -s /usr/lib/i386-linux-gnu/mesa/libGL.so /usr/lib/i386-linux-gnu/libGL.so
Install Wine
sudo add-apt-repository ppa:ubuntu-wine/ppa
sudo apt-get update
sudo apt-get install wine winetricks
Set Office to the 32 bits version ( 64 bits will not work )
export WINEPREFIX="/home/$(whoami)/.wine/office2007/"
export WINEARCH="win32"
Run winetricks and pick Select the default wineprefix then Install a Windows DLL or component and choose those packages vcrun2008, dotnet20, dotnet40, msxml6, riched20, riched30, gdiplus, vb3run, vb4run, vb5run, vb6run close and run wine Setup.exe.