How can i change my video card?

i want to change or update my NVIDIA GeForce 7050 to NVIDIA GeForce 8800 GT but how?How can i change my video card?
Your 7050 is built in or integrated video. The 8800GT is an actual independent video card. You will need to find out if your motherboard has a PCIe slot for the 8800GT to work.How can i change my video card?
You will first have to see if the 8800GT is compatible with you computer, and if you have 2 PCI slots. If you have one, you have to pull out the 7050, and buy a 8800 and put that one in it's place. Sometimes, you may have 2 slots, but the card has to support multiple VGA cards. You can ask the store where you buy the card from.
you have to open the case and put the new graphic card to the pci-e x16 slot, but you also have to check if your power supply have the recommended wattage and amps, also make sure your CPU doesnt bottleneck
take the screw out of the holder, pull it out of the slot, putt the new one in the new card in slot, put screw back in
turn on pc.. uninstall old video card through device manger... turn off pc... remove old card.. replace with new card.. turn on pc... install video drivers... reboot
If you don't know what your doing, don't do it yourself. Your going to **** up your motherboard.