I can not find enything in relation til 1.7.3-beta, which is decribed as a path.
This patch
was available. Now Beta3 is out.
Could i just use 1.7.2 without this path?
Sure. This patch was for 1.7.3-beta1 and not for 1.7.2.
When I find the localhost/xampp/index.html,
There is no "http://localhost/xampp/index.html" in a default XAMPP installation. Maybe you mean "http://localhost/xampp/index.php"?
I can open my php documents, but I missing my menu, which is wrote in php.
So you have to debug your scripts.
Without knowing the code, I can only guess, your filenames have the extension .html instead of .php, or you are using "<?" instead of "<?php".
I do not know what xamp/php/debugclient.exe is, but when I open this file, it tells me that it is "waiting for debug server connect", could the problem be this,
No.