I'm trying to install SP2 RC2 for Windows XP, and I keep getting an error message that I can't figure out. It starts installing, and gets to the point where it says it is "Inspecting your current configurations." Then it will pop up and say, "The file c:\windows\system32\drivers\atapi.sysis open or in use by another application. Close all other applications then click Retry." I close every application open that I can (even unhooking my modem and turning off my firewall and antivirus), and it still pops up when I click retry. I've installed this same file before on three of my other computers, and once before on this one before I formatted it.