Question : sp3 will not update

I received this error message:

an error in updating your system has occurred xp sp3

I have tried everything there is no suggestion listed here that I have not tried, I do not want to do a clean install but do not know what else to do.

Answer : sp3 will not update

Steps to take before you install Windows XP Service Pack 3

check this link first: http://support.microsoft.com/kb/950717