How do you write a letter appealing a not eligible for rehire decision?

I'm a clutz and I fell down my stairs the night before my last day of work and now I'm classified as not eligible for rehire. I don't like this and have never had anything like this on my work record. I was told I could write a letter appealing this, but I don't even know how to begin.
Asked Jan 22, 2010
Edited Jan 22, 2010

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.