google it
But it appears from my end that it's related to the AskJeeves search engine.
Here is one possible explanation:
http://www.techsupportforum.com/1199433-post4.html
If you go to other pages suggested by a Google search, don't waste your time with anything that offers a "free scan" etc
Those do run a "free check" which mainly returns your saved Cookies and in any event the "fix" which follows is only available if you buy some kind of removal product.
You used the term "delete" in your original post.
Perhaps you meant "Remove"...but if not, go to Control Panel>Add & Remove Programs and remove AskSBar
You will need to have your browser CLOSED while doing this or else you might trigger the "Cannot delete, program is in use" message