Adobe Creative Suite 2 (CS2) which was released on 2nd April 2005 is now FREE, yes FREE as in $0, you can download it from the official Adobe CS2 Download Page or from the table below which I copied out.

Do note that for the Mac version, it will not work with the current generation of Macs as it is meant for Power PC based Mac instead of Intel based Mac. You need to be using Mac OS X 10.2.8 to 10.3.8 or Rosetta in order to get it to work.