Help?

um..... well i really need suggestions on picking which class i should be......here are my personalities in gaming:
-i like spell casters
-i am very offensive
-i want a BEATDOWN char
-i dont really like to be PURE offense... i want decent defense so i dont die that easily... i wanna be a person who is kinda hard to kill
-i dont want to be a person who doenst burn mana very fast (energy..w.e its called in this game)
- basically..... i want to beat the crap outta the foe
-i wanna be able to heal my self... ( its not thaaaaat important... it just helps)
- i cant think of anything esle for now.....so i mite post later.... pls give me ur suggestion.. i really wanna know.. thx =)

right now im considering elemtaliast/necro.. is that right? ty =) =) =)

With those contradictions it's hard to find you a suitable character. If it were possible, I'd reccomend a Warrior/Elementalist/Monk, however you can only pick two classes.
I'd suggest to pick a warrior primary and a monk secondary. You'll familiarize with the game and could see what you like and what you don't in this combination.

ur best option with those criteria is god and i havent played the game yet

I'd suggest a Elementalist / Monk for the nukes and healing power. A Ele/Necro could work too with the Blood magic.

However, be aware GuildWars is a team based game so having an ally put Life Bond on you for example, will help you take more of a beating. Teamwork is key and so is your entire teams skill layout. Work together.

Either of those profession combinations would fit most or all of your criteria, but I'm not clear on what you mean by "beatdown". Combat-wise or just powerful?

Like Bobangry and DatD said, Warrior/Monk and Elementalist/Monk sound like the right class combos for you. Out of these 2 I'd suggest the Elementalist/Monk since you have more energy and you like spell casters. The warrior is not a spell caster at all and doesn't have much energy, but he can take much more of a beating than the elementalist can.

You would be better served going through the character resources located on this site before the next beta event......trying some of the things you learn out and deciding for yourself what you would most want to be. Especially if you are new at the game.

Most of the people who have been playing betas since last year or are in the testing...are more interested in fine tuning GvG builds. Though those are great and make for grand strategy of mass teaming. they may not serve you well enough while you are still learning, because they are more finely attuned to performing single tasks and not general survival. It is infinitely better to make a few mistakes than to have it handed to you. You'll learn quicker,.and appreciate it more. Besides you might stumble onto something nobody else did and find something odd that works well.