1. Create a simple batch file “SiebelKill.bat”
2. Right Click Edit the file with Notepad
3. Put the below text

REM******************************************************************************
TASKKILL /F /IM siebel.exe
TASKKILL /F /IM iexplore.exe /FI “WINDOWTITLE eq Siebel Call Center – Microsoft Internet Explorer*”
REM******************************************************************************
4. Save the file
5. Double click the file whenever you want your dedicated Siebel application and its task – Siebel.exe to get killed from Task Manager automatically.
And its done…