[TYPO3-english] Ext. pagepath does not create a link

[Hauke Hain]

Thank you for your answer.

I tried 
require_once(PATH_t3lib.'class.t3lib_div.php');
but that is obviously not enough to get it working.

I want to use the class in my own backend extension.

Dou you have another hint for me?

Hauke