Hello. I must admit that this situation is funny and very, very tricky. I can send all of my email messages to some other computer, but there is just no internet available for me. No matter what I type in the address bar, My Web Search is available and nothing else. No Google, No Yahoo. Is this some sort of Virus?
My Web Search you say? Here is one very clear diagnosis. You will be able to use that Windows for no more than 1 month. Even if you do successful cleaning with HiJack this. My Web Search is some kind of worm or a virus, pretty old and affects users who don't use anything else except Internet Explorer. You could try with Mozilla for a change. It is much better surfing with believe me.