Uh, if your trial ended it's better to either buy it or find another program since you can't extend it. Lots and lots of software out there gets the job done just as well as SAI, and is perfectly free.
This thread has a list of good ones. I recommend GIMP or OpenCanvas (which is a bit like SAI).
By the way, the promotion of software piracy violates Gaia's Terms of Service. And anyway it's really not a good thing to do at all since A VERY LARGE NUMBER of software sharers are in fact NOT doing it out of the kindness of their hearts and god knows what is lurking within the bowels of those pirated Photoshops people have.
It's not the end of the world if you don't have the art software you want. There are always alternatives that work just as good. So uh, calm down.