What's wrong?

[oneofmany]

Hi Everybody..
First of all..I am definetly a rookie..
I am trying to install Pixelpost the way it's explained in the guides (copying files and folders,,)and when I try to reach the admin page I have this answer:
Warning: require_once(../includes/functions.php) [function.require-once]: failed to open stream: No such file or directory in D:\Inetpub\webs\marcobortignoncom\blog\admin\insta ll.php on line 40