I too would suggest OpenOffice - it works with a lot of different file formats and works well. Current version is 3.4.1.
SourceForge 3.4.1:
http://sourceforge.net/projects/openofficeorg.mirror/?source=dlpSourceForge OpenOffice 3.4.0 - click the upper right corner for the latest:
http://sourceforge.net/projects/openofficeorg.mirror/files/localized/fr/3.4.0/Apache_OpenOffice_incubating_3.4.0_Win_x86_install_fr.exe/download?use_mirror=iwebFileHippo 3.4.1 - click the upper right corner for the latest versions:
http://www.filehippo.com/download_openoffice/