Malicious Software / Worm ???

I have been unfortunate enough to be the victim of someone who has designed
an internet blocking "search engine" that they have called NETSTER.

Once it has bedded itself in my computer it overridews any other web site
that I may request, placing its own page on the screen.

It consists of what appears at first glance to be a search engine page but
is only one of two "dummy" pages.

I am at a loss to know how to remove this malicious crap.

Any ideas??

Bruce.
.

Loading