Go to PC Application Downloads > Hydra Alliance thread, if it's not there, try the Diamond Uploaders thread, or the very last sticky which is the entire Adobe CS3 Creative Suite (which includes Photoshop, Dreamweaver, etc).

The individual threads keep messing me up and taking me to other websites, and pspiso slows down my computer a lot for some reason, so I can't actually get you any links. Those are the main places I can remember to go to. Unless you see a Team Sexy Boys thread somewhere - that's where I got mine.

Just to let you know though, Photoshop CS3 requires a minimum of 1GB ram on your pc in order to work well.