How to import an entire folder into Vbulletin Image file?

[dsts6]

I am trying to upload the folder for a skin that I downloads, but it seems to be making me put every single file under the folder into the VBfile rather then allowing me to put in an entire folder0.
For example lets say I have file skin:
-Skin folder
-Misc folder
-60indiv files
-images folder
-70 indiv files

Basically i click on upload file and it takes me to a screen where I can upload but whenever I click on file to upload it just opens the file. I want to upload the entire skin folder rather then every individual file thats in it.
Do you understand what I"m trying to say.
Thanks