[Plugin: PostLists] Use PHP/HTML included file in listing?

Are there nobody that knows nothing about this?

In PostList there is one field that generates the output of posts. Put in this field, I also need to run som PHP code, put so far I cant get it to work. I dont know too much about php code, and can’t write any my self. But I understand the code structure, and fetches code from elsewhere and get things to work that way.

But on this one, I need some help.

One function I would like to use is from thumb.php, to resize some of my images that PostList gets from posts.

Whatever…