Rigging custom model for exporting as .rigid.model

Hey guys! This post will probably generate a few facepalms:
I have spent the last days trying to get new assets into the game. I followed every available tutorial and bugged a few modders, but so far to no avail.

I wonder if someone have or could make a detailed tutorial on how to process the rigging part. The material part have a few tutorials and is pretty straigt forward, but the rigging part no.

Lets say I take vik_head_young_c_05.rigid_model_v2, convert it to .dae, remodel it a bit in any software and then import/merge it into the testfile att_roman_16_cut_6(.max).
How to I proceed with the rigging part? what to delete from the .dae before importing and what to keep?
I tried it 100 times, but BOB returs errors regarding the rig each time.

So a detailed tutorial on this part would be great. In a perfect world a video with voice :/
Also welcome direct contact with any soul who could teach me. Then I can make the tutorial if i get it.

Cheers Aguirre