you can remove this virus manually. click
here
Remember, this is a very smart virus. you will encounter two files one
.bat
and other
.com (having different names on diff computers) the tutorial shows file named
u.bat and
d.com. in your case the .com file is
b.com.
to find the name of
.bat file goto command prompt and type
dir /a this will list all the files in a particular drive (even hidden)
look for any .bat file with strange name.
