Left 4 Dead 2 VTF files?

Where are they located? Im using GCFscape and i cant find them in the Left 4 Dead 2’s common.ncf… So where can i find them?

I’d like to know this too, i heard that they are using a new system now though.

In the vpk’s. steam/steamapps/common/left 4 dead 2/left4dead2/pak01_dir.vpk