Hmmn, what I can say here is that there will be some major changes both physical and spiritual. 2012 is a particular and unique period in the Maya peoples calendar which is up-to-date and renowned for its accuracy.
So then that period is a time for something...what that is nobody can claim to have full knowledge. As it would favor some people so it will mean disaster for some.
So my advice is that anyone living in a location of the earth that is below sea level or sandy can relocate to a more rocky and solid area like Africa.
I know many things will happen like climatic change, biological etc and I hope our lot then will be positive.