CS2 ... Free? .... Well not really.
It is/was/will be an "Urban legend", What happened is that Abode turned OFF the activation servers because CS2 has reached "End Of Life", and is somewhat 'glitchy' on operating systems above Windows XP (Been there tried it with a legit CS2 on Windows 7) and CS2 became the last Adobe update we bothered with.
If you can beg, borrow or find a DVD of CS2
Download Crew have published the instructions and the "free" activation code.