Something wrong with the WINNT.SIF right? As I personalized the original from Suicide Solution's post that urie suggested.
change setupp.ini to this one for sp3 OEM think your is for sp2 Code: [Pid] ExtraData=786F687170637175716954806365EF Pid=76483OEM
Are you testing in VM?? I would start basic and then add stuff. Test in VM.. The .SIF is not correct? Always test thes in VM to sort out inconsistencies and file errors. Have you changed any MSGINA files or similar .dll files??
if it was winnt.sif it would have told you setup couldn't continue or it would have asked you to input something i think files are corrupted on your cd or iso.