After you do the 1st step (the youtube video) download the SatNav mod I sent in the 2nd spoiler. After that, open IMG EDITOR and with it open gta3.img and put all TXDs inside it. You also need to have Cleo dowloaded to put 2 files in it, which SHOULD be putted. (you will find it in SatNav file). Make sure to backup it before installing these new mods.