How do I get rid of W32/Gaobot.worm.gen.u - Win32/RBot.3eu!Worm ?

This is a rogue program that is designed to make you think you are infected to get you to buy their crappy software. Download malwarebytes and run a scan or two, that should clear it up. If you need a free antivirus program then check out Avira or Avast. There are links to all these programs on my download page from the site below.