sorry for my english

i have this in my runonce.cmd

REG ADD %KEY%\810 /VE /D "ParamŠtres pour Default/All User" /f

REG ADD %KEY%\810 /V 1 /D "REG LOAD \"HKU\CUSTOM\" \"C:\Documents and Settings\Default User\NTUSER.DAT\"" /f

REG ADD %KEY%\810 /V 2 /D "START /WAIT REGEDIT /S %J%\DefaultUser.reg" /f

REG ADD %KEY%\810 /V 3 /D "START /WAIT REGEDIT /S %systemdrive%\key.cmd" /f

REG ADD %KEY%\810 /V 4 /D "REG UNLOAD \"HKU\CUSTOM\"" /f

when i execute, i have this error "START unknow command"

Why? And what is correct syntax?

Thanks

Try either

REG ADD %KEY%\810 /VE /D "Paramtres pour Default/All User"
REG ADD %KEY%\810 /V 1 /D "REG LOAD \"HKU\CUSTOM\" \"%SYSTEMDRIVE%\Documents and Settings\Default User\NTUSER.DAT\""
REG ADD %KEY%\810 /V 2 /D "REGEDIT /S %J%\DefaultUser.reg"
REG ADD %KEY%\810 /V 3 /D "%SYSTEMDRIVE%\key.cmd"
REG ADD %KEY%\810 /V 4 /D "REG UNLOAD \"HKU\CUSTOM\""

or

REG ADD %KEY%\810 /VE /D "Paramtres pour Default/All User"
REG ADD %KEY%\810 /V 1 /D "REG LOAD \"HKU\CUSTOM\" \"%SYSTEMDRIVE%\Documents and Settings\Default User\NTUSER.DAT\""
REG ADD %KEY%\810 /V 2 /D "%COMSPEC% /C START \"\" /WAIT REGEDIT /S %J%\DefaultUser.reg"
REG ADD %KEY%\810 /V 3 /D "%COMSPEC% /C START \"\" /WAIT %SYSTEMDRIVE%\key.cmd"
REG ADD %KEY%\810 /V 4 /D "REG UNLOAD \"HKU\CUSTOM\""

Notice how there is no need for the /f switches. There is no /f switch for REG LOAD and REG UNLOAD, and no need for it in your REG ADD examples.

thanks i try the second solution