place the "Frontline_Supply_Drop_v1.0" into your "Steam\SteamApps\common\Team Fortress 2\tf\custom" files and it should then show the props/materials/etc in the hammer

Oh ok it's that simple. Thanks

But it doesn't work

Q) did you place the zip archive or the folder?

The folder

humm... well thats odd... just tested myself and it worked perfectly... i would probably try to verify the game cache and see if that helps

It still not working but thanks for your help

Do any of you know how to use this content in Garry's Mod? like drag and drop the zip or folder somewhere?

I already can't use it for TF2 so for gmod...

How exactly does your folder structure look right now?
Mr.B3TA explained it right but the models do not neccesarily need to go into the custom folder. I personally have it installed in the regular tf folder

so materials go into:
tf/materials/models/props_frontline/*here all the vmt/vtfs are found*

and the models into:
tf/models/props_frontline/*all the .mdl and whatnot are found*

The same method should work in the custom folder althought you need the structure as:

tf/custom/Frontline_stuff/materials...

The extra folder called Frontline_stuff (or any other name) is needed iirc

I did exactly what you said but all the props and materials don't have textures.

This might not apply to anyone else because they're not as retarded as me, but I had the same problem, the files where in the right place but none of the things worked, make sure you restart hammer... I had mine open when I put the files in and that's what caused it not to work

FINALLY! It works! Thank you!