Because of three reasons.
A. I want to go back to my previous msn version.
B. I messed with my MSXML files that somehow are associated with my MSN-login, and my document library doesn't work anymore, yeah I'm sure what I got myself into when I downloaded some msxml installation that probably wasn't supported by windows7. If I click Start, it says under my computer picture; "Charlie", "Document-library-ms", "Pictures-library-ms" and "Music-library-ms".
C. I want my system restoration to work for future problems, instead of always posting my errors while I could simply go back in time with a few mouse clicks. Also for security and safety reasons.
Anyway, I don't really need help with my msn, what's most important for me right now is to have system restoration to work (or what ever it's called in english).