Hopefully a coder will happen by soon, but if not, you could try PM'ing 2muchvideogames or Daubster, they'll set you on the right track. For models if you're making them yourself, it's going to be a long road. You'll need to select a modeling software with .SMD plugins, then learn it. Alternatively, HIT has a
model depot with some weapon models of various real-world weapons (not just various versions of ones from HL) that you might be able to use. Just remember to credit the original authors!
Urby: Mah bad. Same minute.