Not a virus; Bargain Buddy is scumware.

http://www.doxdesk.com/parasite/BargainBuddy.html

First.
Right click the IE icon | Properties | Advanced tab |
Make sure both of these are NOT checked.

  Enable Install On Demand (Internet Explorer)
[[Specifies to automatically download and install Internet Explorer
components if a Web page needs them in order to display the page properly or
perform a particular task.]]
  Enable Install On Demand (Other)
[[Specifies to automatically download and install Web components if a Web
page needs them in order to display the page properly or perform a
particular task.]]

Apply | OK
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Second.
It is known as Scumware.  Visit these sites.  1, 2, 3 and 4 are really good.
Download, install, run, update and run again; one or all.  They are all
good, FREE utilities.
The first site gives some recommendations.
http://www.spywareinfo.com/downloads.php?cat=all#s-p

1)  Spybot S & D
http://www.safer-networking.org/index.php?lang=en&page=download

2)  SpywareBlaster
SpywareBlaster doesn't scan and clean for spyware - it prevents it from ever
being installed.
http://www.javacoolsoftware.com/spywareblaster.html

3)  HijackThis  (some other stuff that may be of interest also)
http://www.spywareinfo.com/~merijn/index.html

4)  CWShredder direct download:
http://216.180.233.163/~merijn/files/CWShredder.exe

4½) CWShredder
http://majorgeeks.com/download4086.html

5)Bazooka Adware and Spyware Scanner v1.13
http://www.kephyr.com/spywarescanner/index.html?source=appvisit

6)  AdAware
http://www.lavasoft.de/support/download/
===============

Additional information & instructions.
A wealth of information here, boys and girls.

THE PARASITE FIGHT QUICK FIX PROTOCOL
http://aumha.org/a/quickfix.htm

THE PARASITE FIGHT
Finding, Removing & Protecting Yourself From Scumware
http://aumha.org/a/parasite.htm