Admin expressed precisely :
thanks for your help and I read the regpolicy.doc file
but for first time it's not easy to design new .adm file
my question to you have any .adm file for short date format?
use a custom adm and put this into it
this will set the regional options to belgian standard settings
and indeed set the short date to what I have put in it
but these settings can be entirely altered to your wishes
see for the correct settings to the tip that KEN B gave you
CLASS USER
POLICY "EU International Settings"
KEYNAME "Control Panel\International"
EXPLAIN "EU_regional_options"
VALUENAME "sCountry"
VALUEON "EU"
ACTIONLISTON
KEYNAME "Control Panel\International"
VALUENAME "iCountry"
VALUE "32"
VALUENAME "iCurrDigits"
VALUE "2"
VALUENAME "iCurrency"
VALUE "2"
VALUENAME "iDate"
VALUE "1"
VALUENAME "iDigits"
VALUE "2"
VALUENAME "iLZero"
VALUE "1"
VALUENAME "iMeasure"
VALUE "0"
VALUENAME "iNegCurr"
VALUE "12"
VALUENAME "iTime"
VALUE "1"
VALUENAME "iTLZero"
VALUE "0"
VALUENAME "Locale"
VALUE "00000813"
VALUENAME "s1159"
VALUE ""
VALUENAME "s2359"
VALUE ""
VALUENAME "sCurrency"
VALUE "¤"
VALUENAME "sDate"
VALUE "/"
VALUENAME "sDecimal"
VALUE ","
VALUENAME "sLanguage"
VALUE "NLB"
VALUENAME "sList"
VALUE ";"
VALUENAME "sLongDate"
VALUE "dddd d MMMM yyyy"
VALUENAME "sShortDate"
VALUE "d/MM/yyyy"
VALUENAME "sThousand"
VALUE "."
VALUENAME "sTime"
VALUE ":"
VALUENAME "sMonDecimalSep"
VALUE ","
VALUENAME "sMonThousandSep"
VALUE "."
END ACTIONLISTON
PART "Enforce EU International settings for all users" TEXT
END PART
END POLICY ; EU International Settings
END CATEGORY
END CATEGORY
grtz