Using REG.EXE, built into Windows XP, Windows Server 2003, and later, or installed on Windows 2000 from the Support Tools folder of of the Windows 2000 CD-ROM, I have scripted OpenFax.bat configure .fax files to open in the Windows Picture and Fax Viewer.

The syntax for using OpenFax.bat is:

OpenFax \\ComputerName

OpenFax.bat contains:

<font size="1">
@echo on
if \{%1\}==\{\} @echo Syntax: OpenFax \\ComputerName&goto :EOF
REG ADD %1\HKLM\Software\Classes\.fax /Ve /T REG_SZ /F /D "FaxFile"
REG ADD %1\HKLM\Software\Classes\FaxFile /V EditFlags /T REG_DWORD /F /D 65536
REG ADD %1\HKLM\Software\Classes\FaxFile /V FriendlyTypeName /T REG_EXPAND_SZ /F /D "@%%SystemRoot%%\System32\shimgvw.dll,-306
REG ADD %1\HKLM\Software\Classes\FaxFile /V ImageOptionFlags /T REG_DWORD /F /D 0
REG ADD %1\HKLM\Software\Classes\FaxFile\DefaultIcon /Ve /T REG_SZ /F /D "shimgvw.dll,4"
REG ADD %1\HKLM\Software\Classes\faxfile\shell\open /V MuiVerb /T REG_SZ /F /D "@shimgvw.dll,-550"
REG ADD %1\HKLM\Software\Classes\faxfile\shell\open\command /Ve /T REG_SZ /F /D "rundll32.exe %SystemRoot%\System32\shimgvw.dll,ImageView_Fullscreen \"%%1\"
REG ADD %1\HKLM\Software\Classes\faxfile\shell\open\DropTarget /V Clsid /T REG_SZ /F /D "\{E84FDA7C-1D6A-45F6-B725-CB260C236066\}"
REG ADD %1\HKLM\Software\Classes\faxfile\shell\printto\command /Ve /T REG_SZ /F /D "rundll32.exe %SystemRoot%\System32\shimgvw.dll,ImageView_PrintTo /pt \"%%1\" \"%%2\" \"%%3\" \"%%4\""