Im Specifically talking about:
- Pirates of the Sword Coast
- Infinite Dungeons
- Wyvern Crown of Cormyr

As far as i know, they are not part of any "modern" compilation release and are not distributed elsewhere anymore.
I heard people say they are actually considered "Abandon Ware" and will be verified as if you purchased them back in the day.

Does anyone know anything specific, and should it be true that they are AW, does anybody know where i could find them (The Neverwinter Vault hosts the english versions, kudos for everyone who could point me in the direction of the german ones SHOULD they be legal that is)

Thanks in advance !

I remember reading in bioware's forums encouraging downloading these mods from the vault for free. I had have asked everywhere how i can get them and that was the only possible answer given to me or they directed me to relevant posts.

Sorry I dont know about german versions.

There are links floating around to download the modules again. Only problem is, they don't authenticate to give you access. I saw posts from early 2015 saying the authentication servers were up and just giving everyone the OK to have the modules, but it looks like it might be down again (or other issues). I'll dig up the links, post them here, and you can give it a shot yourself.

Note, it won't actually say there's an issue with the modules until you attempt to run one.

EDIT: Here's a link on the official Neverwinter forums, to download the modules. Again, they will install fine on anyone's account, but they just won't authenticate to let you play them (that I've seen, good luck if you try anyway).

http://forum.bioware.com/topic/139154-unofficial-links-to-redownload-previously-purchased-premium-modules/

Thanks a bunch guys !
I think it can be considered "semi official" if such a thread on the Bioware forums didn't get taken down.

Since there are ways to authenticate them "manually", its just a question of "is THAT still legal".
But truth be told, at that point, we probably entered so many legal gray areas, i can hardly imagine anybody cares at this point.

Again, thank you very much, i just have a go with the modules from the vault and see what happens ^^

You can download these modules, but you need THIS to play any of them:
http://neverwintervault.org/project/nwn1/other/tool/premium-module-offline-authenticator-generator

Have fun ;)

PS: Oh, and I'm pretty sure the latter three premium modules were only released in English. It sucks a bit, I know - I have a Polish version of the game myself and it feels wrong to have some of official content in Polish and some in English.

Unless GOG has updated the premium re-installer, which is doubtful, then it only includes three first premium modules. You must have gotten these two some other way.

No they're not. Those you must download separately. From the GOG description page:

"The Diamond Edition includes the original Neverwinter Nights and three official expansion packs: Shadows of Undrentide, Hordes of the Underdark and Kingmaker."

The reinstaller is for Kingmaker.

The reinstaller is for the Kingmaker pack, which includes Kingmaker, Shadowguard, and Witch's Wake, even though it's just called "Kingmaker", the name of one of the three premium modules it includes. The pack was apparently sold under that name with those contents before it came to GOG, and the reason for the name eludes me.

Thanks for this link; I'd like to have a running 'Infinite Dungeons' again!

No problem. ;)