Catalyst control center and ati driver problem

I installed Nvidia Geoforce GT630 in my Inspiron 570... windows 7... 8gb ram

Processor a Main Circuit Board b
3.00 gigahertz AMD Athlon II X2 250
256 kilobyte primary memory cache
2048 kilobyte secondary memory cache
64-bit ready
Multi-core (2 total)
Not hyper-threaded
Board: Dell Inc. 04GJJT A00
Serial Number: ..
Bus Clock: 200 megahertz
BIOS: Dell Inc. A05 12/20/2010

A window pops up with ATI Warning and the following message:

"Catalyst control center is not supported by the driver version of your enabled graphics adapter. 

Please update your ATI graphics driver, or enable your ATI adapter using the Displays Manager"

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I can't find the ATI adapter in the Displays Manager. I seraced for a new ati driver but didn't find anything for my puter.

Also, in the PNY instructions it had the following....which I could not find:

If you purchased a PHNY GeForce PCI grapics card and if you have on-board graphics, 

enter the system's BIOS setup and look for a setting called "Primary Display Adapter" or something 

similar. Set this to "PCI". If you cannot locate this setting, please contact you system manufacturer blah blah blah. 

Anyway, there was no such setting in my BIOS.

Anyone have an idea how to fix or get rid of the catalyst control center?

Thanks