Adding a custom model to a map

Ive searched around, but honestly im not even sure how to word what im looking for to search correctly. Im looking to find a tutorial or anything telling me if its even possible to take models like for example, http://www.fpsbanana.com/skins/8406 and add it to my map, so that everyone who plays the map can see it. I know all the skins from that site only you can see, so im wondering if those skins are as well, or if its possible to make them apart of the map.

For props (furniture ect.) just place the files in the right directories ("\models" and "\materials\models" for the textures). You can use programs like BSPzip to store the model files into your BSP file so people only have to download the BSP. There are easy-to-use versions of the BSPzip program like Packrat.

Just add a TXT or something to give credit to the original author of the model. Let him know you've used it.

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