Tim,
Just to clarify: That said, despite everything you have suggested, the Windows XP box still gives the same message about
run-time error R6908 - DOSX32 : can not find file : ms32em87.dll NMAKE : fatal error U1077: 'CL' : return code '255' Stop.
Ahh. Sorry. My XP machines are set up like this: System.ini has the same changes as for W98. The autoexec.bat and config.sys files are empty. Right click on My Computer and select properties, then to set the environment variables on the Advanced tab: Environment Variables: HELP c:\c700\help;c:\masm\help INCLUDE c:\c700\include;c:\masm\include INIT c:\c700\init LIB c:\c700\lib PATH C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32 \Wbem;c:\c700\bin;c:\masm\bin;c:\masm\binb Shortcut to the command prompt has this target: %SystemRoot%\system32\cmd.exe and is set to start in the folder with makefrac.bat in it. No compatibility options are selected. I have two machines set up like this. The older (Sony) will let Fractint start up but only allows a 320x200 image to be generated, otherwise it crashes. The newer (Gateway) runs without any problems. Jonathan