What Are The Requirements For A Gz Drivers License Ok, What Settings Can My Pc Run These Games On(Done Reccomend System Requirements Lab Plz)?

Ok, what settings can my pc run these games on(Done reccomend system requirements lab plz)? - what are the requirements for a gz drivers license

OK, so what are my system specifications:

~ System
Operating System: Microsoft Windows XP Professional (5.1, Build 2600)
System Manufacturer: Dell Inc.
System Model: Dimensioin 5100
BIOS: Phoenix ROM BIOS PLUS Version 1.10 A01
Processor: Intel (R) Pentium (R) 4 CPU 2.80GHz (2 CPUs) - This is not really 2 processors and hyperthreading, my PC recognizes it as 2 CPUs
Memory: 2558 MB RAM - 2.5 GB
File: 495MB used, 2674MB available
DirectX Version: DirectX 10.0 (4.10.0000.3311)

~ DISPLAY
Display Device: NVIDIA GeForce 8600 GT
Manufacturer: NVIDIA
Chip Type: GeForce 8600 GT
DAC Type: Integrated RAMDAC
Env. Total Memory: 512.0 MB
Current display mode: 1024 x 768 (16 bit) (70Hz) - You can have up to 1280 x 1024 and 32-bit --
Monitor: Monitor Plug and Play

~ PROCESSOR
Name: Intel Pentium 4 521
Package: LGA 775
Core Speed: 2793MHz - up and down about 5 or less
Bus Speed: 199.5 MHz
Rated FSB: 798.0 MHz
Cores: 1
Threads: 2

~ MotherRBOARD
Manufacturer: Dell Inc.
Model: 0J8885
Chipset: Intel i945G/GZ
Southbridge: Intel 82801 GB (ICH7 / R)
LPCIO: SMSC

GUI ~
Version: PCI-Express
Link Width: x16 max. Supported: x16

Ok, so I want to know what values you think you could run one of the following games:

-Battlefield 2
Far Cry 2
Run-Bioshock (the demo of BioShock on the highest setting of 1024 x 768 can and decent pictures)
-Crysis (lol almost a joke)
-Fallout 3
-Assassins Creed
Call of Duty 4: Moder Warfare
GTA IV Again ( "I doubt I would play, but who knows?)
"Microsoft Flight Simulator X (My friend wanted me to get it)
-Mass Effect
Portal
-Rainbow Six Vegas

So yes, every idea is welcome. Thanks in advance!