>>>>I forgot to say it's fpw2.6a
>>>>And your recommendations didn't help.
>>>>
>>>>I think it has something to do with NTVDM and/or wowexec, but I'm not sure. The DELL-computer is, according to DELL, the same computer with a faster CPU as a computer that works with a 2.0 GHz CPU.
>>>>And it works with win2000.
>>>
>>>Is the fast CPU patch applied? http://support.microsoft.com/default.aspx?scid=KB;en-us;q240982
>>
>>yes, and fox runs under WIN 2000 but not WINNT
>
>Is it one particular machine that doesn't work, or more than one? If it's just one, try simplifying - disable antivirus software, disable unnecessary services, etc.

I thouhgt that it was that at first, the machine I got was "Ghosted". So I did a clean install of WINNT.
It's strange that fox runs under WIN 2000 though. And my customer even tried WIN XP and there was no problem.