the trainer is very easy, just go to ingame menu by pressing F3 and use F4 for hide and unhide menu.
to browse the diferent options use (numpad keys)8-2(up and down) and 4-6(left and right)
the model changes is available in the "model spawning" option.
right there, just click on the model you want to change ped(it has speechs runner,animation runner, and changes for model clothes (niko has more issues than the other models,obviusly)and change the models voice(all voices available).
there are a lot or more issues in the trainer like running the mission you want again(a dish served cold(my favourite

))
and things like teleporting,weather changes, objects spawning and time controler....
Download Links
here This post has been edited by aacclapd on Thursday, Jul 5 2012, 10:27