Trying to update video drivers and the installer says im not running 64 bit windows?

First off System Specs:

Asus G60VX Series Notebook
Windows Vista 64-Bit Home Premium (Yes, im sure it is 64 bit)
Nvidia GeForceGTX 260M CUDA 1GB
4GB RAM
RealTek HD Audio

IF you need to any other specs just ask.

PROBLEM:

Basically I bought this computer for gaming and several games Ive bought recently wont run so I figured I would update the graphics driver just to be safe and then go from there. I download the installer for the latest nvidia driver just fine, and when I go to install it says Im not running Vista 64-Bit when I clearly am and closes. And when i try the 32bit installer it says it cant find compatible hardware for the drivers, an also untrue statement.

Help please?

what is the manufacturer of your graphics card? XFX ,EVGA?

Im actually not sure, the laptop is from Asus yet there is no clear definitive way for me to tell if thecard is from them or directly from nvidia.

u can search the model of ur laptop on the internet OR u can run the program GPUZ ,it will tell you the subvendor of your graphics card

subvendor is Asus

ok go here:
http://www.asus.com/product.aspx?P_ID=8BN4bwL9v1h2OZIZ

go to the download section select the 64bit OS and try the driver from that site

i stumbled upon this, u can get the drivers from here too

http://www.techspot.com/drivers/driver/file/information/12461/

hope it helps

i have those and they wont run half the new games out right now. im trying to update to the latest from nvidia

then im sorry im out of ideas,wait for someone else to help you out

Have you tried the nvidia automatic driver tool thingy?

Go here: http://www.nvidia.co.uk/Download/index.aspx?lang=en-uk

Click Automatically find drivers for my NVIDIA products. Graphics card. let us know what it recomends.

just tried it, i get a service unavailable message