I say proceed at your own risk, especially if still under warranty. Ifixit sells a good set:
http://www.ifixit.com/Tools/Pro-Tech-Toolkit/IF145-072
If all you are doing is pulling the bottom of the case off, just be careful to not strip out or over tighten the screws. I also lay out a sheet of paper with pen marks on it for screw assignments incase they are different lengths. And finally, use a tiny bit of Loctite blue on the threads when putting it back together.