It is REALLY easy:
Exporting 3DS Max Models to HL2 SMD format1. Download and install VTF plugin, hl2 SMD exporter and GUIStudioMDL, from
here or
here, and of course,
build your model 2. Make a collision mesh, which is just a simplified version of your model for clipping and lighting, bullet holes and etc.
3. Export your primary model as SMD reference.
4. Export your primary model again as a SMD sequence, named
<modelname>ref.smd with the range set to 0 - 1.
5. For the collision mesh, select the whole thing in polygon mode, add a smooth modifier, and set the entire thing to smoothing group "1".
6. Export your collision mesh as reference SMD,
<modelname>phys.smd7. Write your qc file.
This is the bare-bones version i used.
8. Make sure all your VTF and VMT exist in the directory you'll be specifying in in the QC file. Make sure your VMTs set to vertexlit generic, and have the correct paths, e.g.:
[quote]"VertexLitGeneric "
{
"$basetexture" "c28_captainterror/rim_win"
}[/quote]
9. Drag and drop your QC file over the guistudiomdl shortcut to compile.
10. Admire your new creation in model viewer, sell to some guy, and then sit back and count all the monies. The End.