Quoted from MSDN:
"Note that for Windows Server 2003, Windows XP, and Windows 2000, special instructions are required for loading this driver because it might have been released later than the operating system."
   http://msdn.microsoft.com/en-us/library/windows/hardware/ff538820%28v=vs.85%29.aspx



if XP-SP3 & usbccid is used,
update with WindowsXP-KB967048-v2-x86-ENU.exe for {DriverVer=03/17/2009,5.2.3790.4476}

http://hotfixv4.microsoft.com/Windows%20XP/sp4/Fix257459/2600/free/378228_ENU_i386_zip.exe