Help me with my graphics driver please it's emergency(nvidia geforce)

Hello people i have a huge problem and i need your help immediatly!I have a sony vaio VGN-AR61M when i bought it it had Windows Vist 32 bit and graphics driver: Nvidia Geforce 8400M GT GPU,after 3 years (now) i formated it in windows 7 64 bit and now i can't find the driver of the graphics card anywhere.I need it for my job please if you can help me do it I will appreciate it

Have you ran Windows Updates since installing Windows 7? Whenever I have re-installed Windows 7 on my PC it downloads the right Nvidia driver for me when I run Windows Update.

Ohh i didn't do it mate i will try it now.I will reply if it worked or no...

If Windows Updates doesn't have a driver for you, then try going to this site.

Drivers | GeForce

ohh i did bro i searched everywhere

H'mmm. I see they have an "auto detect" feature on the web page. I have never used it, but it might be worth a shot if all else fails.

This is the latest driver for that card,

Drivers | GeForce

No it does not work.In my old pc it was working but now i get the following error:
GeForce 8400M GT

This product has been detected as your primary device
Your product manufacturer requires you to download a driver for your device from their website

Derekimo i will test the driver now

It is not working it says not combatible