MSNAPPAU.EXE…Can’t turn OFF !!!

Four days ago, I noticed a slowdown in my PC. I always have 3 things running from StartUp. Explorer, Systray, and FreeRAM Pro. 4 days ago I noticed MSNAPPAU in the Control>Alt>Del Window. I traced it to being MSN Updater. I found 2 instances in C:\WINDOWS\System\ One for MSN Toolbar, and the other in MSN Apps. I keep trying to turn it off but i can’t. I have had MSN Toolbar for months and it never appeared. i think I started when I reinstalled IE6 and Updated IE6. What is it and why won’t it go away?