Hi Acheron, Although I have been reading it for months, this is my first post on the forum, so bear with me if the following is somewhat of a newbie's question . I have been trying to create a silent install of TB 2.0.0.19 using an .inf file, following your indications here and in your twin Firefox thread, but I guess I must be pretty dumb for it won't install, no matter what I do. I only get the file to create/copy the following files to the expected locations: thunderbird.cfg, override.ini, and _config.js within the "Greprefs" folder; the Registry seems to get updated just fine with the new information. But the actual .exe file simply won't start. I tried using no /S switch, just in case that was creating the problem, but nothing happened. I then unzipped the file as downloaded from the Mozilla site--which was the one that I had been using so far--and used the setup.exe instead, but that was of no avail either. Since my computer is sometimes peculiar when it comes to paths, I changed the full path for "%01%", which I take to be the folder where the .exe and the .inf file are located (am I correct, incidentally?), but no way. As for how to run the inf file, I have tried the "mouse right click > Install" option, as well as using these two commands on the console: [Version] Signature="$Windows NT$" [DefaultInstall] RunPreSetupCommands = Thunderbird.Install:1 RunPostSetupCommands = Thunderbird.Config:1 AddReg = Thunderbird.AddReg CopyFiles = Thunderbird.CopyFiles,GrePrefs.CopyFiles UpdateInis = SkipOEMigration [DestinationDirs] ;Thunderbird install dir Thunderbird.CopyFiles = 16422,"Internet\Mozilla\Thunderbird" GrePrefs.CopyFiles = 16422,"Internet\Mozilla\Thunderbird\greprefs" [Thunderbird.CopyFiles] ;General config file "thunderbird.cfg" [GrePrefs.CopyFiles] ;Enable general config file "_config.js" [Thunderbird.Install] ;Mozilla Thunderbird 2.0.0.19 """%01%\Thunderbird20019.exe"" /S" [Thunderbird.AddReg] ;Set thunderbird as default mail and news handler HKCR,".eml",,0x0,"ThunderbirdEML" HKCR,"CLSID\{29F458BE-8866-11D5-A3DD-00B0D0F3BAA7}",,0x0,"Mozilla MAPI" HKCR,"CLSID\{29F458BE-8866-11D5-A3DD-00B0D0F3BAA7}\LocalServer32",,0x0,"%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe /MAPIStartUp" HKCR,"CLSID\{29F458BE-8866-11D5-A3DD-00B0D0F3BAA7}\VersionIndependentProgID",,0x0,"MozillaMapi" HKCR,"mailto\DefaultIcon",,0x0,"%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe,0" HKCR,"mailto\shell\open\command",,0x0,"""%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe"" -osint -compose ""%%1""" HKCR,"news\DefaultIcon",,0x0,"%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe,0" HKCR,"news\shell\open\command",,0x0,"""%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe"" -osint -mail ""%%1""" HKCR,"nntp\DefaultIcon",,0x0,"%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe,0" HKCR,"nntp\shell\open\command",,0x0,"""%16422%\Mozilla Thunderbird\thunderbird.exe"" -osint -mail ""%%1""" HKCR,"snews\DefaultIcon",,0x0,"%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe,0" HKCR,"snews\shell\open\command",,0x0,"""%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe"" -osint -mail ""%%1""" HKLM,"SOFTWARE\Clients\Mail",,0x0,"Mozilla Thunderbird" HKLM,"SOFTWARE\Clients\Mail\Mozilla Thunderbird\shell\properties",,0x0,"Thunderbird-&opties" HKLM,"SOFTWARE\Clients\News",,0x0,"Mozilla Thunderbird" [Thunderbird.Config] ;Install addons "cmd /c for %%%%e in (""%01%\Addons\*.xpi"") do ""%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe"" -install-global-extension ""%%%%e""" ;Install themes "cmd /c for %%%%e in (""%01%\Themes\*.jar"") do ""%16422%\Internet\Mozilla\Thunderbird\thunderbird.exe"" -install-global-theme ""%%%%e""" [SkipOEMigration] "%16422%\Internet\Mozilla\Thunderbird\override.ini","XRE",,"EnableProfileMigrator=false" BTW: as so many people on the forum, I am completing an unattended installation of WinXP together with an assortment of applications that I normally use (I use WPI through the post-$OEM$ system; I prefer this to integration via srvpack as I can easily select what to install at any time). So far I have run the inf on a virtual machine. Should there be any difference installing this from an .iso file? Any help is appreciated. Thanks in advance and keep up the good work!