If you didn't aim to downld it, then get rid of it!
Google it
I did & mostly all I got was virus programs.
http://www.nuker.com/container/detai...sb_toolbar.php
I've a suspicion it's spyware/adware!
I'd recommend you get these utilities to be on the safe side: 1.
ad-ware (FREE), & also
2.
Spybot - Search & Destroy (FREE)