Alejandro,
and regarding Michelle's comment that this is not a grass issue,
unfortunately to get grass running you need to know something about make,
rpm (or equivalent),shell scripts, root privilegdes and package
installation, at least it helped me get it running. I hope I didn't mess
something else.Alejandro
I think it's nice that you share your experience, don't misinterpret me, just wanted to warn about the risk to "play" with libraries 
Michele.