I love CS3, only thing I get annoyed with is not been able to see the cursor in some tools.

System Requirements (May Change)

Macintosh
PowerPC® G4 or G5 or Intel based Macintosh processor
Mac OS X v.10.4.8
320MB of RAM (512MB recommended)
512 minimum of RAM if you are running Adobe Bridge as well
64MB of video RAM
1.5GB of available hard-disk space
1,024×768 monitor resolution with 16-bit video card
DVD-ROM drive
Internet or phone connection required for product activation
QuickTime 7 software required for multimedia features

Windows
Intel® Pentium® 4, Intel Centrino®, Intel Xeon®, or Dual-Core Intel Xeon processor
Microsoft® Windows® XP with Service Pack 2 or Windows Vista™
320MB of RAM (512MB recommended)
512 minimum of RAM if you are running Adobe Bridge as well
64MB of video RAM
650MB of available hard-disk space
1,024×768 monitor resolution with 16-bit video card
DVD-ROM drive
Internet or phone connection required for product activation
QuickTime 7 software required for multimedia features