Adv. Guestbook, just won't work. Please help!

Hi!
I'm trying to get teh Advanced Guestbook working, but it just won't work

I'm running Apache 1.3.27 udner Win XP with PHP 4.3.4 and MySQL 3.23.53.
My site resides in /kibk/ and all the guestbook files in /kibk/guestbook/

I've managed to use the install.php to create db/tables but after that I have no clue to what's going wrong.

When I try to access index.php or admin.php through the link from my site or directly in it's subdir all I get is a empty page, if I vciew the sources it's pretty much a empty webpage /some info, and a empty body).
I get no error messages or anything, just empty pages :/

Do I need to change something in the Apache config? Or PHP/SQL config? What am I doing wrong? What should my gb config look like?

Any help to get this running would be welcome!