I'm having the exact same problem. I'm not particularly Windows savvy, but
have done a Live OneCare scan (found problems, couldn't fix them all). The
problem happens in both Firefox (my browser of choice) and IE7. I have run my
scans using AVG, no problems encountered, and used MalwareBytes but still,
nothing. I am pretty sure this is a hijack scenario, as clicking links in my
search engines takes me to commercial sites and not my intended destination.
I have installed and run TrendMicro's 'Hijack This!' and it seems to have
cleared the problem. Thankfully. They sell systems without a Windows disk
over here so a format is out of the question.
Hope you find a solution Victor

Jennifer
"Victor" wrote:
> i can't download anything from microsoft website