1. Get OpenBRF here: http://forums.taleworlds.com/index.php/topic,72279.0.html
2. Open NW resources you want to import
3. Make a new .brf and copy and paste the NW resources in it.
4. Then open The Red Wars module.ini and type "load_mod_resources = ImportedResources"
And Voila, they should after that be imported