I have started a game with an Archer kit, and I am wondering if anyone knows where the string for the bow can be found, I know where the actual bow is (Tanner's Shop) but I cant find the string (i have previously played with a mage and got up to irenicus) ????

You will find it in Spellhold...

Spoiler
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...If you go north in the second part of the dungeon, to the room with the Golems.

Is it to do with the golems that haste themselves when you open the chest and the door locks? If so, how easy is it to kill them golems? when i fought them, they kept on beating me to shreds ... so yeah, what do i do? what kills those golems good?

Yep, it is there. Remember that those Golems ONLY can be hit by +2 or better blunt weapons. Try to summom beasties, maybe they won't do damage, but they can keep Golems away from bashing you. Also use stone- / ironskin spells. And keep everyone who can't help defeating them out of the room!

Yep. That's one tough battle.

If you can get your summoned monsters to attack, the golems will sometimes only target them. Gives your fighters/casters a little extra time to get some licks in and flip some spells.

I never had trouble with that fight?
I always thought the battle with Irenicus afterwords is much tougher

Items that are great against them...
Flail of Ages +3
Staff Mace +2
Staff of Rynn +4
Staff of the Magi(if your a mage, you can do this fight solo, without taking a point of damamge with this staf :D)
Clerics Staff +3
Martial Staff +3
Staff of Air & of Fire(if you do their coresponding quests)
Warhammer +2(the three different kinds)
Warhammer of Thunderbolts +3(if you do the mindflayer quest)
Dwarven Thrower +3
Mauler's Arm +2
Mace +2
Club +3
Club 'Gnasher' +2
Flail +2
Morning star +2
The sleeper +2
Wyverns Tail +2


Three more items that would be of help agaisnt them if you have ToB installed, but Id like to hope you dont, or youd be posting in the wrong forum ;)