how do you write an essay for apply to a graduate program - (Feb/27/2009 )

What kinds of topics could I include in a essay for admission comitee for a graduate program?

Please help me with some ideas, I need to success with this application

Thank you

I found searching at google this pages

http://becasmexico.wikidot.com/carta-de-motivos
http://career.berkeley.edu/Grad/GradStatement.stm

It helps me so much, to write my essay, but please let me known, what do you think about this questions to answer writing this kind of letters.

Why are the reason for study at this University?
Why you are be capable of study a graduate program?
Which are the main reason to study this graduate progam?

Do you have more ideas to answer wrinting an essay for this purpose?

Consider what a PI would see as important - self discipline, precision/accuracy, consistency, goal orientation, interpersonal skills, interest in areas of research, etc.