Beginner: failedtoopenstream of PHP; problem: Windows XP system

Beginner's problem: failedtoopenstream in PHP. in Windows XP, I installed wamp on the machine and mounted a server. Then, in php, require_once & quot; HTML/Template/IT. php & quot; and then run it. the following error occurs: Warning: r newbie: PHP failed to open stream. windowsXP system
I installed wamp on the local machine and mounted a server, and then I
Require_once "HTML/Template/IT. php ";
Then run the command.
Warning: require_once (HTML/Template/IT. php) [function. require-once]: failed to open stream: No such file or directory in D: \ Program Files \ wamp \ www \ example8-2.php on line 7

Fatal error: require_once () [function. require]: Failed opening required' HTML/Template/IT. php '(include_path = '.; c: \ php5 \ pear ') on D: \ Program Files \ wamp \ www \ example8-2.php on line 7

I have installed the HTML_Template_IT package. I am a little dizzy about what permissions I say online.
Can you help me answer this question? Or how to set permissions?

I learned PHP for the first time. I don't know much about it. please kindly advise. thank you!

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No such file or directory
Wrong path...

From this path D: \ Program Files \ wamp \ www \ example8-2.php

The estimated location should be D: \ Program Files \ wamp \ www \ HTML \ Template \ IT. php.

Or set require_once "HTML/Template/IT. php ";
Change IT. php to the absolute path, such as require_once "D: \ Program Files \ wamp \ www \ HTML \ Template \ IT. php ";
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Well, the path is incorrect. it is either a write error or a file put error. You do not need to set permissions under win. Check whether the path and writing path are correct.
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Your code is require_once (PEAR. php); then PEAR. php must be in the same directory as IT. php.