php include

Hi community,

I installed WP yesterday on my account, and its working lika charme. http://hahn-alexander.de/wordpress/
Everything is as I expected it to be.

Now, I want to implement the blog into my homepage (not the final version, all for testing), here:
http://hahn-alexander.de/index.php

Not the biggest php user, but I thought it could be done with php include. Well, maybe I just don’t know, what I have to include, but its not working.
I searched here for an answer and I would be very pleased if there is somebody who will help me.
Hope with my (in GermanSchool-learned-) English my situation is clearly discribed…

Greetings from Germany
Alex