I am buying a Macbook Pro to replace my current windows laptop. Can I activate photoshop cs4 on both, since they are different OS's.
#1
Marie,
The license is for one user, one platform (either Mac or Windows), and two machines that are not used simultaneously, typically a laptop and a desktop.
The license and the installation DVD or download are platform specific. The Mac installer will not work on Windows and vice versa.
#2