Laptop Graphics Card Driver Issues

[Chronicler]

I downloaded this driver today after realizing that the one I was using was pretty outdated. I tried installing it and so far I have not been successful. I'm not sure if I'm doing this wrong (first time I ever had to update a driver for anything) or it's some other problem.

The first thing I did was download and run the exe. After a location selection and a short progress bar the "installation" was successful. What I think really happened was that the exe extracted setup files to a folder on my C partition and then prompted to install some HD audio drivers... I continued a bit confused and it finished installing those (I think?). After all this I saw that the display drivers did not update and figured that I would try and run them from the folder the exe extracted to. I found 2 folders in the NVIDIA folder that was extracted to my C drive one had the installation stuff for the audio drivers and the other was titled Display. So I went into the display folder and ran the exe. It was the display driver installation but it gave me an error that their was no drivers that were supported by my hardware or something. So then I tried to uninstall that folder and ended up uninstalling all of the drivers for the graphics card .

So now it's using VGA drivers and I desperately need to get either the old drivers back or preferably the latest drivers for the device.

The laptop is an MSI GX620 running Vista Home Premium SP2. The graphics card is a nVIDIA GeForce 9600m GT.