I would have to agree with getting a job as a nursing assistant. I would recommend getting a NA position in a hospital setting if possible, you will see many of the skills you will need to test out on in nursing school (i.e. suctioning, catheters, IV's etc.).
A ward clerk, a HUC (health unit coordinator) would also be a great experience. You would be transcribing DR. orders all day long, seeing the names of medications, treatments, procedures etc. You would also get first hand knowledge of "how a nursing unit is run".
Good Luck with whatever job you choose, and good luck with nursing school, I hope you find this website and bulletin board a great resource during school!
WORLDWIDE NURSE: The Internet's Nursing Directory