CSS sound porting

How could I change the sound scripts of a new skin so that it won’t replace my defualt CSS sounds in GMod?
I already know how to hex models, so if someone could tell me this, that would be really cool of you.
I googled a LOT and found no results.
This is the best category I could find for this question.

To get it to work right, you need to decompile the model, and change the sound entries in the .qc and in the sound script. That’s just if you want everything to work right.

Alright, thanks.