I cannot access E-mail via websites (such as hotmail.com, gmail.com, work E-mail). A number of other websites also seem to be blocked (e.g. store.malwarebytes.org). I get the message "This webpage is not available" [Google Chrome]. I managed to download the malwarebytes installer from cnet.com, but the installation fails with some not very useful error message. (I can't check it now because I tried to open Internet Explorer and now the system is hanging). Without Malwarebytes, I can't proceed with the recommended 5 steps for malware removal. When I try to run Windows Update [Windows XP], I first get a message that the default search provider has been tinkered with. Then, when I try to "allow" the update in Internet Explorer, an error pops up and the update cannot proceed. Please help!