Skus zmenit nastavenie DNS servera
Control Panel -> Siete a Internet - > Network and sharing center -> Change adapter settings
Tam pravy klik na bezdratove pripojeni - Vlastnosti - Internet protocol Version 4 - kliknut na vlastnosti a nastavit ako na obrazku
http://imageshack.us/photo/my-images/265/dnsb.jpg/

//mam anglicke windowsy, u teba musis najst k tomu cesky ekvivalent :)