Cassi, you may want to read this:
http://helios.gsfc.nasa.gov/qa_earth.html#magflipThere is absolutely no fossil evidence to suggest any global disasters to biology during, leading up to, or after, a pole flip. Migratory birds will be a little confused, and some of our technology will not function correctly, but things like hurricanes and earthquakes are completely unrelated phenomena to the Earth's magnetic properties.
The global-catastrophe conjecture that has so many people worried are myths propogated by cranks, just like the Planet-X armageddon predictions.