Hello, Thank you dimesio & vitamin! This is what I finally did: - Script (seems too much simple to be 'honest' but... runs! [Shocked] :D ): Code: #!/bin/sh exec wine regedit /tmp/seamonkey.reg - seamonkey.reg: > REGEDIT4 > > [HKEY_CLASSES_ROOT\ftp\shell\open\command] > @="C:\\windows\\system32\\winebrowser.exe -nohome \"%1\"" > [HKEY_CLASSES_ROOT\htmlfile\shell\open\command] > @="C:\\windows\\system32\\winebrowser.exe -nohome \"%1\"" > [HKEY_CLASSES_ROOT\http\shell\open\command] > @="C:\\windows\\system32\\winebrowser.exe -nohome \"%1\"" > HKEY_CLASSES_ROOT\https\shell\open\command] > @="C:\\windows\\system32\\winebrowser.exe -nohome \"%1\"" > [HKEY_CLASSES_ROOT\mailto\shell\open\command] > @="C:\\windows\\system32\\winebrowser \"%1\"" > HKEY_CLASSES_ROOT\xmlfile\shell\open\command] > @="C:\\windows\\system32\\winebrowser.exe -nohome \"%1\"" > [HKEY_CURRENT_USER\Software\Wine\WineBrowser] > @="(valeur non définie)" > "Browsers"="seamonkey" > "Mailers"="/usr/bin/seamonkey_wrapper" - seamonkey_wrapper: Code: #!/bin/sh seamonkey -compose $@ It seems running quite well (and comes after [Arrow] this topic (http://forum.winehq.org/viewtopic.php?t=9966)) but please, is there something wrong or incorrect? Best regards!