I dont use spyware or other mal-ware cause your computer slow down. McAfee have antispyware and spamkiller then you have no worry about it. If you really want put new ATI video card. Ok, just uninstall old video card and remove video card from slot then shut down PC and unplug power then put new ATI video card in PCI slot. Restart PC and put CD in drive for install new ATI video as should be pop up said add new hardware just do follow step to step instruction for installation new video card. ATI video card package should be everything in the box like CD and manual book.
Hope everything going smooth with new ATI. Good Luck
Hope everything going smooth with new ATI. Good Luck