Re: Windows 7 RTM befor the end of january.
Sorry, but that isn't accurate. Windows 7, if it does RTM in 2009, will be in Q4. I think it was originally slated for early 2010, but no solid dates have been released yet.
There is supposed to be an official release of Beta 1 sometime in January, again - I don't think there are any dates yet, but it should be public too. This will be the only public beta released for Windows 7.
While on topic, it's important to mention that you need to be using the current builds if you are using a build at all. There are versions floating around all the torrent sites that are in big trouble at the moment. This zero-day flaw for IE of late impacted all versions of IE, including the one that comes with Windows 7. MS did not provide a patch for builds that are not current - which means if you are using an illegal version of the build, or did not receive it legitmately, you could be running a build that isn't patched. Your options, use a legit OS or use another browser.
/rant