For those of you who read my last thread you'll know I was having problems accessing the .mdl files for CS GO. In the end I discovered I didn't need to use the .ncf/ .gcf file. I needed to use the pak01_dir.vpk file in the csgo folder. Now I can extract any .mdl file I want however now I have a new problem- I can't ADD to the pak01_dir.vpk file, for obvious reasons. So once I have made another copy of a differnt size, how do I get it into hammer? Also, I have downloaded other models that were intended for CS Source, and I can't get these into hammer either. I have been told on 2 occasions that I will need to open up the pak01_dir.vpk with either notepad ++ or a hex editor, and "change the bit where it tells it where to look for the model and its name" I asked for a more detailed explanation as I don't have any idea how to do this but no one got back to me. I opened it up in notepad and I can't find which bit to edit or what to type.