Hi, i have the same problem
i downloaded gta iv from piratebay and works...i don't understand why want social club to play but it doesn't matter..i'm playng it on vista but is slow...i don't know why...pls can any1 help mee??

here's my specs:

windows vista business(service pack 1)
intel(R) core(TM) duo CPU E4500 @ 2.20 GHz 2.20 GHz
4 GB of RAM
32-bit
GETFORCE 8500 GT

excuse for my english..!! and pls help mee

Hi evry one I have a Core 2 duo processorE4500 with 2 Gb of ram and I have Nvidia geforce 8400 Gs and the game runs smooth on 1024*768 resolution with all graphic setting set to medium and i was evn able to set the frame rate to 17 but when i changed the resolution to 800*600 my Pc started to crash can anybody tell me why this happens ??

FOR ME IT'S INSTALING IN 1 HOURS AND 90 MINUTES

Get 9800 nvidia videocard
and a quadcore processor

Install Windows XP Sp3 Vista takes 600 MB Ram at idle when Xp only takes less than 200

To sole the problem install ram medic and free the ram and also ccleaner to clean registry and there you can disable unused start up items to consume less ram and make gta 4 run faster

I have phenom 2 940 overclocked at 3900mhz 8gb ddr2 1066 raptorhdd 300gb

i found if you run the game at 1024- 768 no antianalysin higher refresh rate turn view distance to min it runs a hell of a lot faster (also turn water right down and get updates for game)

Well i'm using the razor 1911 crack on min so every time i go to put a crack on it says that the game does not work???
and the specs for my computer if you need to no is AMD Phenom(tm) 9550 Quad-Core 2.20GHz 4gb ram ddr2
ATI radeon hd 4350 (512mb)

Every time i play the game i need to play it at low everything pretty much for it to be able to run without lag and even then some times i get a little lag???

...have you tried a side by side comparison (for performance) between 32 and 64 bit?

64 bit would undoubtedly lower the workload of both the cpu and ram. Not to mention: the PHYSICAL reason GTA 4 has a low fps on even highend dual-core processors is because the game was designed for QUAD cores and especially not single cores. XP wont utilize the full performance of a dual processor, while as Windows 7 will. (Vista sucks)

The same problem happend to me and i was just wondering what do i disable for example??

Try a registry cleaner, visit this site for a free download http://tinyurl.com/c4lnag

Is that how you fix it is with that

I copyed the cd to the hdd the run it through a fake cd drive (cant remember what its called) it runs a lot quicker but it does still have problems even though my new spec is

phenom 2 940 oc 3896mhz
8gb ddr2 1066mhz
gtx 280 1gb
300 gb raptor hdd (10000rpm)
wd caviar 640 gb

to be honest i think the game might have problems with me because i havent downloaded any paches ( how do i and were from ??? )

I was s**t scared to install on win 7, got through no hiccups at all, game runs perfectly, all this hype over needing 8 gigs + a quad + a 295 to run this in any playable fashion is ridiculous, my specs are x2-4400, 2gb generic, MSI k8t-neo2, and HIS 3850 512, nothing spectacular, but gta4 runs perfectly, now this is not a show off post, more just to let people know it is perfectly playable on min specs, and as for win 7, im, running 64bit, this may help, but no compatibility mode used to run or install. oh and i run all this at 1920x1080, everything on medium.