For those attempting to run CS3 on legacy hardware, the original minimum requirements included: : Intel Pentium 4 Go to product viewer dialog for this item. PowerPC G4/G5 RAM : 512 MB (1 GB recommended). Storage : 2.0 GB - 2.5 GB of free space.
: Adobe offers a 7-day free trial of the latest version of Illustrator, which is much safer and more capable than an 18-year-old software version. System Requirements (For Older Software) For those attempting to run CS3 on legacy
If you are looking for a "good guide" to learn the software, you should rely on official documentation and verified archives rather than risky downloads: : Adobe offers a 7-day free trial of
: The complete, archived Adobe Illustrator CS3 User Guide is available for free as a PDF from Adobe Support. Official Learning and Trial Resources
I really need to install CS3 [CS3 IS DEAD] - Adobe Community
: Portable versions are known to be unstable, prone to frequent crashes, and may lack core features found in the official release. Official Learning and Trial Resources