Microsoft has released an update for Windows XP to resolve an issue in VBScript/JScript scripts from CScript WScript hosts
>> Update for Windows XP (KB951978)
Install this update to resolve an issue in VBScript/JScript scripts from CScript WScript hosts, certain built-ins may not function correctly when Standards and Formats in Regional Settings is changed. After you install this item, you may have to restart your computer.
>> Update for Windows XP (KB951978)