[RockmasteR]

please follow Lord Sirian's instructions,
also, download Revo uninstaller from my sig to uninstall the game and all it's remaining from the registry and from your HDD
restart your PC
install the game again
be sure to get the latest Directx 9.0C (get from my sig)
also get the latest drivers for your video card

 

[RockmasteR]

you were having an error with Wolverine!
did you fix that?
please let us know what you did, so everyone can benefit of this.

also for GTA IV, I have a Geforce 9400 GT 1 gig, I used to have that game, I played it on 800 x 600 with Textures on high, view set on 10, motion blur on (forgot what it's called in the menu), and I got 25 to 30 fps, but unfortunately, that game needs a monster CPU, and my Dual Dore E2200 couldn't keep up well, so I took it back
so maybe getting a new CPU will help you a bit, but also getting a new video card will sure helps a lot