I have found a couple but, do they do anything?  I have done many things with them and have had no luck.  Is it just something for us to do until fighting and trading comes about?  Or is there something that I am missing.  

-Also, once a person finds a crystal does it dissapear for good or can other people find them there too??  

Sorry, I am new, like most of you, hopefully somebody has an answer!  

Thanks in advance!!!

Ok, I got all the parts of the game and got the reassembler too.  I run the reassembler and then I click on the installer then it says to me \"can not run beacause it is incompleate or currupt.\"  Can some one tell me how I fix this?