Importing source models into blender. Need advice.

I have been trying to import source models into Blender 2.67b, but currently nothing works. So far all I’ve been able to import were basic shapes that were made using Propper, everything else such as crates, stoves, barrels, etc have failed importing.

I have tried different tutorials, plugins and tried decompiling .mdl files but I am missing some major step here, any help with this will be greatly appreciated!