I don't use NT but I do have this LAN adapter on my PC and the install disk has the files for NT on it. I hope this helps you out.
The following files are found inside the driver download file.
|PROKDD.SY_||2.4 KB||20 Nov 1995|
|IAFT.SY_||13.3 KB||11 Jul 1997|
|PROSET.CP_||8.9 KB||5 May 1996|
|MSNT351.TXT||6.4 KB||25 Jun 1997|
|557SET.HL_||24.2 KB||24 Jan 1997|
|E100BNT.SY_||18.9 KB||17 Sep 1997|
|E100B.SY_||18.2 KB||17 Sep 1997|
|PROSET.EX_||125.6 KB||16 Jul 1997|
|MSNT40.TXT||6.2 KB||25 Jun 1997|
|SPDO3DG.SY_||13.3 KB||19 Sep 1997|
|EP100DG.DL_||13.7 KB||26 Jun 1996|
|EPRO100.DL_||162.0 KB||8 Aug 1997|
|E100SET.HL_||40.7 KB||17 Jul 1997|