PNG Problem on Windows 98

Thank you for the reply,

i tried it with the devel version 1090 (18.02.2004) but it is still the same
problem.

Is there any other solution. As said before it works on 1 Windows 98
Computer but not on the other's.
I can't change the operating system of the computers. Which files of windows
could i check?

Thank's again.

Johannes