Swapping models?

[stemofathorn]

How do i swap models? I want to swap the knotted cutoffs or whatever they are called, (the ones in Casual Gals) with Chuck.
I don't want to download a mod, i prefer to do things manually.
The thing is, there are 8 files.
leg_Knotted_Top_Cutoffs_f.tex
leg_Knotted_Top_Cutoffs_f.big
leg_Knotted_Top_Cutoffs.tex
leg_Knotted_Top_Cutoffs.big
chest_Knotted_Top_Cutoffs_f.tex
chest_Knotted_Top_Cutoffs_f.big
chest_Knotted_Top_Cutoffs.tex
chest_Knotted_Top_Cutoffs.big

I don't know where the chuck model is, or what it's called.
Because i have the basic idea, but i don't know the models.
I know that i put 4 of these files in a safe place, and rename the file i want to replace them with that name, but i don't know what files to use, the ones with _f or the ones without. Help me?

[Freako]

_f means it's Frank's model and the one without it is Chuck's.
Kindergarten stuff, really.

[stemofathorn]

well i'm not as good as some of you on these boards. I'm a rookie. I admit it.

[tommah]

yea, f means frank and Leg/Chest is the specific part of the outfit. Also Chuck is on of the files named something like "ds_chuck" something wierd like that. If someone knows of a different "new" chuck model I would also like to know