Although Adobe is currently selling Creative Suite version 5 (CS5) there are plenty of people who still want to try out version 4 (CS4).
The main reason for this is that CS5 is 64 bit only. So for those of us still running 32 bit operating systems CS4 is the only option. Unfortunately Adobe don't provide links to CS4 products on their website anymore.
Luckily the guys over at TECHNOLUX have come to the rescue!
Be sure to read the full article before attempting to download anything as there are a few points that need to be understood.