Scanned for Virus. ViRobot found one:

C:\WINDOWS\System32\SVKP.sys

ViRobot repaired (removed?) this.

But, my browser is still behaving strangely. Some websites load normally,
some do not. One that does not, Merriam-Webster.com, a dictionary that I
use a lot, loads a page that reads:

www.m-w.com

But it is not the Merriam-Webster dictionary website, even though the
address bar reads www.m-w.com. It is a very plain-looking website with some
ads and links. Is there any way I can fix my Internet Explorer browser so
that it will go to the true website listed in the address bar, instead of
these false ones?

Thank you