Ok, u know clerics, well I just wondered do they have there own spells because there is all that stuff about Domains, I just wondered if someone could clear up all that domain stuff?....

They do have extra speels available, due to 3rd edition rule changes, but I do not believe that is relevant in NWN...

They only game I have played so far that uses the domain spells is IceWind Dale II..

Domains in NWN are underdeveloped. There will either be early access to cleric spells or access to arcane spells or some type of enhancement. Not the be-all and end-all of domains.

In full 3rd ed rules a cleric gets to choose two domains out of the selection for his diety. Each domain gives you some sort of bonus, either a new feat, some special ability or bonuses to certain rolls. Each domain also comes with a list of spells for levels 0 to 9. A cleric has to memorise at least 1 of his domain spells for each level of spells he can cast. So in most cases a cleric will get to choose 1 of 2 possible domain spells to pray for.
In never Winter nights domains simply give you access to spells earlier or spells you normally couldn't cast. They have been made simpler and you don't have to memorise a domain spell(?).

Not 0-level spells though ;)

But most of the powers, extras feats you get is not at all as they are potrayed in NWN. I heard that IWD2 will have this feature better cowered though.