Jolicloud has provided you with the links available on my server. The service packs are compatible with both Workstation and Server editions of NT.
It's important to note that Microsoft abandoned support for NT many years ago and that many service packs, particularly 4, 5, and 6 are no longer downloadable from the Microsoft server.
I decided to archive the English versions of the service packs to make it easier for users maintaining legacy systems. Many users, particularly corporations, continue to use these systems, especially NT 4.0 which remains quite capable. However, it would be nearly impossible (and quite an undertaking) for me to try and locate these in another language, especially considering I never used these operating systems in another language.
Your best bet is to use the English versions of NT 4.0. Seeing that you posted your request in English I assume you are capable of using an English variant of NT.
I hope you will find these service packs of use to you.