How many computers can Microsoft Office 2007 be installed on?
Other retail copies allow you to install on up to two computers, provided at least one is a laptop/netbook. Both computers must also be used by the same person. It may be possible to install on two desktops, or on a friends computer, but this would be a violation of the End User License Agreement (EULA). Microsoft has the right to deactivate one or both installs if you violate the EULA.