When you want to write a good resume, the point is to sell yourself.
You want to give all background information on your skills, etc. that is relevant to what you're applying for, to show you are qualified and what they are looking for. Whether its college, a job, etc. For example, if you are applying for a job as a receptionist, what do you think they are looking for? People who are good at communicating. So if you are bi-lingual(speak more than one language) you should definetly put that down. If you have any other previous experience in working with people, you may want to put that down aswell.
But companies usually want to hear about your recent experience, rather than something you did back in 1998.
You also want to let the employer know you're job objectives. What do you want to do? How do you plan on doing? Are you responsible?
A found a site that seems pretty good, so you can check it out.
http://www.nhlink.net/employme/how.htm