custom models (for xsi please read =))

i have created a model (a katana =D) that i want to use, the first problem is

i need to get my model into gordons hands (like, i cant transport my models into a scene with gordons hands and i cant get gordons hands to my models scene)

Note: this isnt a crowbar replacement

Also i want to know how to make it work in game (so that when i click it attacks and then does damage) i know it has to do with the qc file or something file like that but i dunno how. And again its not a crowbar replacement but its gonna be put under the crowbar under the first tab

any help?

sorry, but you can't add weapons that are not already in the game, unless you make them as a replacement, or unless you write your own mod.

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i eat paint

yeah, but this is for a mod XD