While the desire to use a classic tool like Dreamweaver CS3 is understandable, there are critical risks involved with downloading "portable" versions from third-party sources: Malware and Vulnerabilities:
: They can run from a USB drive without touching system registries.
Adobe Dreamweaver CS3 Portable is a version of the popular web development tool that has been modified to run from a portable device, such as a USB drive or cloud storage service. This version of the software is designed to be lightweight and self-contained, allowing users to take their web development environment with them wherever they go.