What operating system is required to run Dreamweaver?
See “System requirements and languages” for details. Dreamweaver CS3 now supports Windows Vista and Intel-based Macintosh systems. Dreamweaver was not designed for or tested on Macintosh systems formatted with Case-Sensitive File Systems or UFS. Dreamweaver also does not support using local or remote folders (via Local/Network) located on a Case-Sensitive File System or UFS partition. You can see if your Macintosh has a Case-Sensitive File System or UFS format by choosing Macintosh HD > Get Info, then check the value for the Format property.