MSN Explorer? May I ask why you need 2 internet browsers?
Okay - went into Safe Mode and I was able to open IE 8 and finish installing it. I was able to browse. I tried to update Windows in safe mode, but it wouldn't let me - windows site said there was an error. But now I'm back in regular mode, and again IE 8 will not open. I'm still have to use MSN Explorer.
MSN is a browser just like IE is. In fact it is loosely based on IE6 and originally released with XP back in 2002. Do you have internet service through MSN?