>Hi,
>
>I had a foxpro 2.5/2.6 written application that call HASP protection DLL file for protection which when run under WinNT 4, give me only a blank white screen, then halt my system.
>
>On the other hand, using the same HASH DLL file with my Vfp 3 application, my application run without any problem.
>
>Could it be the problem of Foxpro 2.5/2.6 REGFN function problem with my application. Please advise or help. Thank a lot

Is the .DLL a Win16 or Win32 .DLL? If it's a Win32 .DLL, it's usable from VFP, but not from FPW, which is a 16 bit application.