I extracted a FF file with Tom Extractor Program, edited it and now...  I want to compile the folder to .ff file again? How can i do it? I'm only see WaW Mod tools compiling .map Files

Since you're extracting and viewing a fast file which i'm guessing is someone else's (not stock fastfiles) then all I can say is:

http://tinyurl.com/6yw42mb

if however you're not and you're trying to create a mod/map then here's a good place to start off:

http://ugx-mods.com/wiki

- no problem

It's not someone file Its WaW stock file, i wanted to edit zombie spawn delay

It's not someone file Its WaW stock file, i wanted to edit zombie spawn delay

And this needs to be done in a .ff? Aren't there scripts for you to change, to do this?.. 

I searched but don't found anything... It's not to my map, its to the stock WaW maps

I searched but don't found anything... It's not to my map, its to the stock WaW maps

There are mods that work on Stock maps, so technically you should be able to edit it in a mod you're creating, no?

Yeah, you're right