Image display in Guestbook

hi
i tested Advanced Guestbook in my localhost. it is working fine.

But after upload to the webserver, i have some problems. i am not that good in php.

the fonts are changed and the "img" & "smiles" folder images are not displaying at all. And after upload the user photo, its not displaying the thumb image of the photo. i already set the tmp, public access state as 777.

i installed the guestbook in my domain like www.domainname.com/gbk

where i need to change for these settings for to display the images from "img" and "smiles"? And for the "User Photos".

http://proxy2.de/forum/viewtopic.php?t=3628&highlight=missing+pictures