There is no certain way of writing a great CV. Sure, you could make up a lot of crap, like you were in the Navy SEALs, but I'm assuming you don't want to lie...
All you need is a CV that's well organised, so it's easy to see what is where.
Write down your personalia first, followed by your education second (most recent first), followed by your job experience (most recent first). It's always smart to put hobbies and interests on your Cv too (they go at the end by the way). If you happen to share an interest or hobby with the person doing the interview, you are already a step ahead of the competition. UNLESS YOU ARE APPLYING FOR A JOB IN PAINTBALL, FOR THE LOVE OF ALL THINGS GOOD AND HOLY, DON'T SAY YOU PLAY PAINTBALL ON YOUR CV. Nothing says gun loving wannabe Rambo like paintball does to the masses that know f*ck all about it. And trust me, they don't want you to school them.
When laying out your job experience, include a short description of your tasks and responsibilities and perhaps an achievement in that job that you are proud of.
That's pretty much it.
Your accompanying letter does not need to be of novel length either. Keep it short and on one page. A good closing line is something like: "it is always hard to describe oneself in writing, but I would be more than happy to expand on motivations and experiences in a face to face meeting."
All you need to include in your letter is a short reason why you applied for the job, uyou know, why you think you would be well suited for it.
Again, keep it short. The thing that gets the real attention is your resume, not the letter.
And you said that you will make sure your grammar (don't forget spelling!) will be perfect in your CV, I can't stress too much how important that is! Nothing says "I'm really sh*t" than a crap letter/CV! And no offense intended, but if your spelling here is anything to go by, you need a lot of help (that's not an insult, it's honest constructive criticism). Get it sorted.
Good luck.
PS Maximumbob, stop being a dick. What Mario said is actually some real good advice. No need to look for trouble where there is none.