Scheduling job problem and modification in the bat file

Question

Dears ALL
i am using the following script in windows 2003 server for oracle database 10 g i have one problem of scheduling the task i scheduled it successfully on windows scheduled task program but its not running at scheduled time and even when i run this bat file manually this give the security warning The publisher could not be varified,Are u sure u want to run this software? when i click on yes then it runs the bat file may be thats the problem in aslo scheduled how to remove this warning
2ndly i want to do some changes in my script like this that it removes the same file older than 3 days means it jst have the last three dumps and will remove the olders the script is as
@echo off
CLS
REM ********************************
SET V_USER=riyadh
SET V_PASSWORD=riyadh
SET V_DB=vis
SET V_DMP_PATH=D:\dump\
REM ********************************
ECHO.
SET EXP_PATH=D:\oracle\visdb\9.2.0\bin\
SET MONTH=%DATE:~4,2%
SET YEAR=%DATE:~10,4%
SET DATED=%DATE:~-7,2%
ECHO ECHO CONNECT AS : %V_USER%/%V_PASSWORD%@%V_DB%
ECHO Backup on : %DATED%/%MONTH%/%YEAR% (DD/MM/YYYY)
ECHO SAVE AS : %V_DMP_PATH%%V_USER%_%DATED%%MONTH%%YEAR%.dmp
ECHO TITLE BACKUP ...%V_USER%_%DATED%%MONTH%%YEAR%
echo.
%EXP_PATH%EXP.exe %V_USER%/%V_PASSWORD%@%V_DB% file=%V_DMP_PATH%%V_USER%_%DATED%%MONTH%%YEAR%.dmp log=%V_DMP_PATH%%V_USER%_%DATED%%MONTH%%YEAR%.log
THANKS A LOT

Answer 1

Solution:
Run gpedit.msc
Go to User Configuration >> Administrative Templates >> Windows Components >> Attachment Manager
i have followd all the steps as it is but when i open the Inclusion list for moderate risk file types its not configured and the msg below this is Supported on: At least Microsoft Windows XP Professional with SP2
and i have windows 2003 server so how to add it or enable it etc
THANKS a lot for ur reply