I didn't make it!
when i open the editor i get an error message saying: 1. set enviroment variable 'vproject' to the path where gameinfo.txt is 2.place " below the path where gameinfo.txt is. 3.add-game on the comandline where is the directory that gameinfor.txt is in.
i have made a game info file and put it in Steam/SteamApps/youraccount/half-life 2/
i dont understand what i need to do to be able to start using the editor.