Winter!: Prepare for holiday gaming!
As with most of the GTAs I found myself drawn into this one as well. I'm a fan of the more realistic approach, while still retaining the over the top action I've come to expect from the series. Unfortunately if your computer is anywhere near the minimum requirements you'll likely not be able to run it well, and probably won't be able to on any, less than uber, system without some sort of tweaking involved.
Game Traits applied to Grand Theft Auto IV (PC) by Merrinset