I'm now on some Icy Island, and I've passed some caves with Ice sentry golems, Ice trolls ect, to catch the wyrm spirit, but I can't find the key to open the door, before the door is a room with stange fishes, and before that room is a priestress, but nobody seems to have the key, were can I find him?

<font color=lightblue> I almost need more information. I assume that you are in the first building you come to in Wyrms tooth, (i guess depending on the way you travel.) But if it is the case where your party "translates" to the room with the salamanders (or fish to you!) and the king. I think i know what room you are talking about and the key will be somewhere on the map. Have you looked everywhere?
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some boiler room and the key will be given to you by some captives. Oh wait... either that or the locked door leads to the captives.... you'll figure it out eventually. lata skata </font>

The key was on one of those "fishies" - the biggest one if I remeber correctly

Seach the corpses (loot on the floor)

Thank ya:)

Wait a sec! Ice Golems Sentries??? The Wyrms spirit? Are you sure that you are not on the Sea of Moving Ice and the FIshies are Sahuagin???

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You don't need a key to open that door to the north. IIRC, destroy the spirit of the dragon spawn in the hlaf globe. I think that triggers the door.