Shenan Stanley wrote:
If replacing the userinit.exe based off what you find doing Google
searches is beyond your ability - perform a repair installation
(in-place upgrade) and that should replace the file for you - but
you will have to re-install a lot of updates and perhaps even
re-install IE.

How to Perform a Windows XP Repair Install
http://www.michaelstevenstech.com/XPrepairinstall.htm

How to perform an in-place upgrade (reinstallation) of Windows XP
http://support.microsoft.com/kb/315341

--
Shenan Stanley
MS-MVP
--
How To Ask Questions The Smart Way
http://www.catb.org/~esr/faqs/smart-questions.html