Error 80040154

Ive received this error while trying to log into my windows live messenger. It happened 'all of a sudden' and nothing 'problematic' led up to this event. I followed the instructions for the link that was given with the error message -- and verified that I DO have msxml3.dll. I still downloaded it and restarted the computer to receive the same message when trying to log into live messenger.

I downloaded zap messenger, and got rid of live messenger. Re installed it. Same message. Downloaded msxml3.dll and same thing all over again.

Please help! Thanks in advance.

Try a system restore from before the problem.
http://www.vistax64.com/tutorials/76905-system-restore-how.html
If it does not work we have several options
We can try an sfc for one