How to install a graphics card?

[Reenk Roink]

Hello.

I am in desperate need of some 101 idiot proof instructions on how to install a Graphics Card.

I currently have an ATI Radeon x300 SE 128 MB PCI-Express.

I have just received a Nvidia GeForce 7600 GT 256 MB PCI-Express from Newegg (allow me to use this green balloon [] to endorse Newegg).

So:

Please tell me step by step how I am supposed to remove my old graphics card, uninstall its drivers, put in my new graphics card, and install its drivers.

Thank you very much.

Edit: I was too impatient to wait for expert counsel so I went ahead, prayed, and installed the card myself following the directions. Went off without a hitch and now I'm playing an ultra smooth M2:TW on highest settings!