Personal Statement Help

<p>I just have some questions about writing the personal statement... basically, what should I be sure to include? I assume it would be better if I focused in on a topic I'm passionate about (probably my experience with marching band and drum corps- the commitment/work ethic it takes, as well as keeping good grades simultaneously).. would this be good? And does it matter if it doesn't have much to do with my intended major, as I plan on majoring in computer science?
Here's the prompt, "Write a personal statement, in 250 words or more, about yourself ... be as creative as you like" ... so it's nothing specific.
Thanks :).</p>