Guys help me please i am facing some problem on GTA IV.I just bought the disc like 2days ago and i almost tried every online method but still no luck to overcome it

i am running window7 x64bit
Details:
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 3 (7601.win7sp1_gdr.120330-1504)
Language: English (Regional Setting: English)
System Manufacturer: ASUSTeK Computer INC
System Model: CP6130
BIOS: BIOS Date: 02/05/10 19:13:52 Ver: 08.00.10
Processor: Intel® Core i3-2120 CPU @ 3.30GHz (4 CPUs), ~3.3GHz
Memory: 4096MB RAM
Available OS Memory: 4078MB RAM
Would be great if someone could help me teamview ,i am somehow weak on computering.Also i tried reinstall famenetwork 3.5,run under window 2k,xp service pack3,window95.Thanks for any help !
my msn hollydevil_95@hotmail.com