hi, i have dowload maps and campaigns but, when i saw .vpk files, i dbl clik on it but i don't have any programs who automaticli instal it. it asks me if i want to check on internet if there is on apropriate (there isn't) WHAT DO I HAVE TO DO, i don't know how to do to open it whith steam
thanks to you (if you help me)

hi
right click on your vpk file
(i have a french version of window, and i just translate the french menu …)
click on "open with"
then "choose defaut program"
browse and go to : ../steam/steamapps/common/left 4 dead/bin
and select "addoninstaller.exe"
for finish check the box : "always use selected progam for open this file type".
click on ok ….

sry for my bad english

I did everything blacky_fr says but after it tries to open the vpk it says " 'Pitstop' v5 was not installed. It is possible that the add-on is already installed and in use" what am i supposed to do?

i have a vpk file for left 4 dead skin and it show as a white paper and i have addoninstaller. i have install it and in the game i saw it was checked and in gameplay it won't show the skin i have installed