EXS 24 Logic Sampler Users Group

I'm a newbie to Logic (6.3.1 OSX MAC G5) and have just activated the 
demo of the EXS24 Sample Player.
However, when I pulled down the drop list to try some Factory sounds, 
there is no list of Factory sounds present.
Is my Logic install missing something?
Or is there somewhere else I can download patches (samples?) to load 
into the EXS24 so I can try it out.
In particular, I would like to try some good acoustic piano, 
orchestra and drum/percussion sounds.
Thanks for any pointers.