A couple of years ago we used OpenOffice on a few computers for about a year. It worked well for employees that didn't need any of the advanced features. Eventually, we ended up purchasing additional licenses to install MS Office as OpenOffice didn't support the security we were using to lock some excel spreadsheets.I think in our situation, it didn't work because we had a mixed environment. If you would be willing to switch everyone to OpenOffice, I think you would have more success. Just make sure that your power users are still able to do everything that they can currently do in MS Office. Sorry I don't have a better answer for you, but maybe someone else does.PS - The newer version of OpenOffice may work better now, but since we already purchased the MS Office licenses, we don't have a need to test it.