

It might be less expensive for Microsoft than being required to maintain perpetual compatibility of their OS with every piece of software ever written for Windows by every independent software vendor. (I don't recall whether that applied to the "official" builds, 70.) There are forums at Adobe that may be a better source of information about their products: (Irony mode ON.) Perhaps Microsoft should be funding upgrades to all software broken by changing to new Microsoft operating systems. CS3 was supported under Vista, but it wouldn't install on some of the Win7 betas. (I need to use the 32 bit version with my scanner, for example.) I have never tried Photoshop CS2 on Win7. (The 64 bit version cannot use 32 bit plugins, so there's another opportunity to spend more money.) Both are installed, and I can run either version as necessary. I partially justified the upgrade because it includes a 64 bit version, that can use a lot more RAM than the 32 bit application. It seems to work well, although Adobe doesn't support it on that OS. I use Photoshop CS4 standard on Win7 X64.
