Hello pcyeoh and Welcome to the board.

My guess without knowing any other information is that your BATCH file is invalid for XP.

Please answer some questions.

1. What version of KiXtart are you using on the Server?
2. Are you the Administrator of the network?
3. What Network type (NT 4.0 or 2000 AD)

Try modifying you logon account to use KIX32.EXE then the name of your script and see if that works for you.

Please take a look at this FAQ here on the board which may be able to help you as well.

Use of %0\..\ to launch KiX
http://www.kixtart.org/board/ultimatebb.php?ubb=get_topic;f=10;t=000071