How to trigged the hook script?

Hi all,
I have problem about hooks script.
My platform is Win2k，and the subversion is run on win2k.
In this case:
When someone want to checkin his code to subversion server，then the suvbersion
server will check his code style, if his code style unfit, the
subversion server will not allow
the programer checkin his code.
The folow is what I do:
In the repository directory, in the hooks subdirectory, I place the
*.bat named start-commit.bat , pre-commit.bat, etc
But when I checkin the code to the subversion server, the hooks script
dosen't check
the code style.
And I have set the %path% right value that I expect.

Where is my fault?

-- 
Jiaxian Wu
mail:jiaxian01@gmail.com
qq:61460982
msn:jiaxian01@hotmail.com
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