installation:
drop the "tf" folder in the 
"C:\Program Files\Steam\SteamApps\(Your Name)\team fortress 2" folder. this is for the
texture.

for the model, pick which hat you want to replace, find the corresponding folder in the pack, open it
then drop the "models" into "C:\Program Files\Steam\SteamApps\(Your Name)\team fortress 2\tf"
 
