GT320 1024MB NVIDIA GeForce for GTA IV

Hello, I have a system with the following configuration:

OS: Windows 7
Processor: 650 Intel Core i5
Ram: 8GB
Disk: 1TB
Video Card: GT 320 1024MB NVIDIA GeForce

can you tell me if this configuration is good enough for me to play GTA IV?
will i be getting any lagging problems while playing the game?
how clear will the details in the game be?