Thanks everybody for the replies.
I also forgot to mention that are allowed only base classes from the PhB.
Also there are currently 5 others players (Druid, wizard,sorcerer,rogue, cleric)
So i'm left with fighter, bard, barbarian, monk,paladin or ranger. Like i said i'm pretty noob; i've only played till level 5 with a cleric e few levels with a psion.
I really don't know, i feel that the group could use some can meat (like a fighter) but i've read so many times that it sucks.
I feel pretty much restricted with all these limitation. So, what can you guys reccomend me?
I know that is up to me to chose something to fit my playstyle, but i really don't have a playstyle but I tend more on versatile PC rather than a simple tank and spank.
If only i could, i'd play a factotum 
P.S: I really don't care to play something uber optimized and OP. I prefer something that can lead to different cool roleplay situations. (but with that i don't mean i wanna sit in the middle of the fights doing nothing)
Monk would sit in the middle doing nothing in most circumstances. In that party, you'd most likely end up being reduced to setting up the rogue's sneak attack.
Firstly, yes, the fighter sucks. The monk is much, much worse. Much. VERY MUCH. *ahem*
Second, is there only allowed to be one person per class?
It sounds like what you
want is a melee character. But that's inference.
From the guide to Wizards, here are the party roles as most of us have come to understand them (written from the perspective of it being in a guide for Wizards, mind).
We've all heard that the standard party in D&D revolves around 4 iconic roles. For those who have spent the last 25+ years of their life NOT playing D&D those roles are: Meleer, Healbot, Arcane caster and Skillmonkey. The rest of us knew that already.
In other words - if you go back to Basic D&D there were 4 human classes. Thief (now we call them rogues to be politically correct), Magic User (now we call them Wizards since it sounds less boring), Clerics and Fighters.
However, rules have changed and party roles have changed. A party with the 4 iconic roles should do just fine - but I would define the roles differently.
Out of combat you have 4 roles:
Social ("The Fop"): This guy thinks he's the leader. Whatever - he does the talking well everyone else lets him.
Sneak ("The Corpse"): This guy sneaks ahead to scout the enemy's lair and finds and disarms traps for the group. Why do I call him the "Corpse"? - reread what he does again.
Healbot ("The Gimp"): Anyone who spends his character's resources for healing is clearly the party Gimp. That said - you want a party gimp. Preferably - not you. (though it can be done with Arcane Disciple)
Utility Caster ("Everything Else"): The party transporter, the party Diviner. One way or another - this is the casters' role - in other words - this is you.
That's it - everyone else is just taking up space. You should have all those bases covered - but let’s face it - D&D is primarily about combat. No matter which of the above your character is good at, if he can't contribute in a fight - your character is a liability to your party.
In combat there are also 4 roles - these are the roles that get filled:
The Big Stupid Fighter: This role involves two things: Doing HP damage to BBEG, forcing BBEG to attack you with his viscous weaponry. The Big Stupid Fighter is not always a fighter (though stereotypically he is). He may be a Barbarian, a Summoned Critter, or a Druid. In order to qualify as a Big Stupid Fighter he should be any character that actively tries to be the target of enemy attacks. For those who wonder why I would label this character as "stupid" regardless of their INT score - reread the previous sentence.
The Glass Cannon: This role involves one thing: Doing HP damage to BBEG. The Glass Cannon is like the Big Stupid Fighter except he does not want to take damage. Usually this is not due to superior intelligence - but instead due to inferior HP or AC (or in most cases - both). The Glass Cannon is often a Rogue (Or Rouge for our 13 year old readers), a Gish, an Archer, or a Blaster (the inferior wizard).
God: When reality would entail the above two meeting a rather messy end - someone will need to make some adjustments to said reality in order for the above two to instead meet glorious victory. What other label could such a force be labelled as than "God"? Well - how about "Primary Caster" One label or another - this guy needs to make Reality his Witch (replace the "W" in your head.) in order to do his job effectively.
The Waste of Space: This is the character of the player who thought a Bard/Monk/Sorcerer multiclass was an excellent idea - or who thought healing was a good "combat" role. This character just doesn't fill any of the above roles well enough to be anything but a liability to the group. You probably have had one in your group. Heck, you probably have one in your current group. Don't sweat it - as long as it isn't you.
* Why isn't the Healer useful in combat? Good question. There are two ways you can live your "pretend" life - reactively or proactively. God will alter reality to prevent damage, a healer will try to do "damage control" (pun intended) after the damage has been taken. Simple truth: The mechanics of the game make preventing damage more efficient then healing damage after the fact. That's not to say a well placed "Heal" or even "CLW" never has use in combat - but if you're doing your job - it should never be required as a primary role.
So the real question here now is: What rolls do you want to fill?
Because, I'll be blunt, making a Monk
useful, much less
good, in a party with a Wizard, Cleric and Druid would require a
lot of CO.
Tripping, Grappling, Damage, just the Druid out-matches anything you can at this level by a factor of 3 (your effectiveness, cubed). That could be swung a little in your favor if he is restricted to the forms in just the Monster Manual, and you were allowed full access to everything as a monk, but not even then would you be as good at those things as a Druid, you just wouldn't be as far behind him. This is nothing compared to what he could do if he, or the Wizard, were actually
trying.
EDIT: Just to clarify: I do think this can be done (a monk in the party). We are a character optimization community. We could get a request for how to have a core-only Commoner be effective in a party with a Wizard, and one of us or another would manage something. So, I guess there are a few questions to be added in:
- How tied to the Monk are you?
- Does this group have a rule about not over-lapping base classes? (note: you can be in the same class as someone and be doing an entirely different role in the party with it.)
- You already inferred a non-committal point ("don't really have a playstyle") to this question, but I'll directly ask it just to be sure: Which party roles most interest you?
- Is SRD allowed?
- Are Psionics allowed?
- Is there a way you could bully your DM into allowing the Factotum?
