got it here.
it was not really an official patch or plugin that would make the pc version look like the xbox 360 version but rather it was like a graphics enhancer that works on any game. made by ENB. I tried some of the other graphics enhancers that was available on the site and this is what i came up with.
this one is with the said plugin made for the game but is not. too dark IMO. Didn't even bother to take screenies in-game cause it looks as if you're watching on an old tv.

supposedly for gta san andreas



supposedly for gta 4(the best IMO)



sorry for the screenies, i know they suck. don't know how to screenshot nba2k12 so i just window moded it then snipping tool.
anyway, my laptop has a nvidia gt540m 2gb ddr3 video card, intel i5 2nd gen, and 4 gigs of ram. there isn't any problem at all with this on. I also don't have any patches yet so it just purely the enhancer.
credits go to ENB