All CS3-CS5 plugins now FREE!
Graffix plugins for Adobe Illustrator CS3, CS4, and CS5 are no longer supported, but can be activated for free!
Just download the CS3-CS5 plugins you want, install them, then when prompted to register any of them, enter the following.
Name: Creative Suite User
Until you’re ready to move on to CS6 and the Creative Cloud, this ought to make work in the older versions a bit easier.