From Microsoft's EULA Q&A: The End-User License Agreement (EULA) for many Microsoft application software products contains the following sentence: "The primary user of the computer on which the SOFTWARE PRODUCT is installed may make a second copy for his or her exclusive use on a portable computer." If your EULA contains this sentence, then, subject to the conditions mentioned, you may make a second copy of the software. Note that you must be the primary user of the computer on which the software is installed. The primary user is the individual who uses the computer most of the time it is in use. Only that individual is entitled to use the second copy. Furthermore, the software must be installed on the local hard disk of your computer; you are not entitled to make and use a second copy on your portable computer if you run the primary copy of the software from a network server. Finally, only one secondary copy may be made; you may install this copy on more than one portable computer. Please note that many Microsoft products are copy protected and it will not be technically possible to make a second copy of the disk. FROM APPLE: This License allows you to install and use the Apple Software on a single Apple-labeled or Apple-licensed computer at a time. This License does not allow the Apple Software to exist on more than one computer at a time. You may make one copy of the Apple Software (excluding the Boot ROM code) in machine-readable form for backup purposes only. The backup copy must include all copyright information contained on the original. Except as expressly permitted in this License, you may not decompile, reverse engineer, disassemble, modify, rent, lease, loan, sublicense, distribute or create derivative works based upon the Apple Software in whole or part or transmit the Apple Software over a network or from one computer to another. This license allow you to install or operate the Apple Software only on a computer system that came bundled with a licensed version of the Mac OS at the time of original manufacture. By your standard, Dizzie, it seems you're out of both an operating system and most of the software you use. As I said, the Poser EULA is far from unique.