My computer was hacked

Somebody added the following lines to my "hosts":

76.76.96.180 qip.ru
76.76.96.180 www.qip.ru
76.76.96.180 www.vkontakte.ru
76.76.96.180 vkontakte.ru
76.76.96.180 www.vk.com
76.76.96.180 yahoo.com
76.76.96.180 www.yahoo.com
76.76.96.180 odnoklassniki.ru
76.76.96.180 www.odnoklassniki.ru
76.76.96.180 durov.ru
76.76.96.180 www.durov.ru
76.76.96.180 webmoney.ru
76.76.96.180 arbitrage.webmoney.ru
76.76.96.180 www.arbitrage.webmoney.ru
76.76.96.180 a1agregator.ru
76.76.96.180 www.a1agregator.ru
76.76.96.180 mail.ru
76.76.96.180 www.mail.ru
76.76.96.180 otvet.mail.ru
76.76.96.180 ya.ru
76.76.96.180 www.ya.ru
76.76.96.180 a1help.ru
76.76.96.180 mts.ru
76.76.96.180 www.mts.ru
76.76.96.180 megafon.ru
76.76.96.180 www.megafon.ru
76.76.96.180 yandex.ua
76.76.96.180 www.yandex.ua
76.76.96.180 www.yandex.com
76.76.96.180 yandex.com
76.76.96.180 www.rambler.ru
76.76.96.180 rambler.ru
76.76.96.180 ya.com
76.76.96.180 www.ya.com
76.76.96.180 gmail.com
76.76.96.180 pda.vkontakte.ru
76.76.96.180 www.pda.vkontakte.ru
76.76.96.180 www.gmail.com
76.76.96.180 www.yandex.ru
76.76.96.180 yandex.ru
76.76.96.180 vk.com
76.76.96.180 google.com
76.76.96.180 www.google.com
76.76.96.180 google.ru
76.76.96.180 www.google.ru
76.76.96.180 www.hdrustube.com
76.76.96.180 hdrustube.com
76.76.96.180 mail.yandex.ru

I hope that address 76.76.96.180 will be blocked soon.