Does the CS4 trial download work now? When I went to demo Photoshop CS4 Extended they e-mailed saying that it wasn't available yet, even though the link for the trial download was there.
Are you in university? You can usually find keygen stuff on campus file sharing networks (such as DC++ and Shakespeer). Torrents are relatively safe if you check em out, and your computer should virus scan them when you are downloading anyway.
Premiere Pro is great.