I tried out a lot of scripts now to solve my problem, but nothing works like I want it to.
I want to have a custom background image for every actor in my party.
The script that worked best right now was STR33g1_Battle Status, but l got problems with 640x480 resolution somehow (have tried out changing so many coords).
Here you can see what it should like (don't wonder, these are 3 times the same image for my actors :D ):

I hope you can help me either finding a scripting which solves this or to find someone who could write these lines of code :)
~Despise