I know there is already a thread about it but the upload site doesnt work.
Also, i dont understand how does it work...

I uploaded my .swf to filebox, which link i have to take to put my animation into my sig ?

The one that says "Direct Link".

If it is a .swf you'll have to put [swf] tags as well.

where was the orginal thread? i need to know how to do this.