This is quite simple if you're not stupid.
Just put the files in the .rar file in your Innerspace/scripts/openbot/ folder.
MAKE SURE TO MAKE BACKUPS!
http://uppladdning.net/filer/a18c9a08b081c9101c7029c3331ae546.rar <--- 224 REVISION
Then load up openbot when inside wow. There' will be a new button called BG, click it. Rest is self-explainatory.
When inside a bg, there's several buttons you can click, go to the told destination and click ze button. This will add a hotspot for the corrensponding button.
Pre-made BG mappings can be found here: Removed due to request from the software author