Retail Office 2003 versions can be installed as follows:
conditions of this EULA:
1.1 Installation and use. You may:
(a) install and use a copy of the Software on one personal computer or
other device; and
(b) install an additional copy of the Software on a second, portable
device for the exclusive use of the primary
user of the first copy of the Software.
So you can install on one PC and on a second, portable device for your
exclusive use.
Students and teachers versions allows 3 installations.
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