This is some files that you could change to improve the FPS in the GTA IV...

It´s great if you don´t have a great PC...

Tested in:

MSI Nvidia 8400GS @ 512MB
Intel Core 2 Duo E4500
2Gb of RAM

If you find any error, please send a email to prmf06@hotmail.com

I hope you like! =D