From what I have going at school they suggest 1 page...name at top in a bigger font than the rest of the paper...then contact info, address etc...after that an objective statemant...then you highest level of education...if you graduated or are in college list that (leave out high school...it is implied)...then put you work experience...limit each job to five - six bullet points...at the botomn list cpu office/networking...etc ability and other special training (certs or specific machines)
At the top of the page it looks nicer if you put a solid line across the page between name, info, obj stmt, experience...use the bold for your name and catagorey heading...and when listing jobs put a city / state where it was and a month / year for begining and end.
I have been going through this with the career services at a college in ohio. Also a cover letter should have your name, contact info, experience, and a statment why you are seeking out their company + why you would be a good fit...if they like that...then they read your resmue.