A word of warning about installing Windows 8. There are fake versions floating around which are actually Win7 tweaked to say Windows 8 and have a trojan embedded into the core. There's a lot of fake copies around - it's simply tempting you to install a virus which you think protects you with security. This is the same trick malious coders do with 99% pirated anti-virus and OS software. Don't use them!
Windows 8 hasn't been released, there is no beta yet, and it hasn't been leaked... except for some planning documentations.
Windows 8 has been said to be more based on cloud network computing and it won't even look like Windows 7 or any other previous version OS.
Windows 8 will be released on 2012 (the predicted 'end of the world' date) and will run pretty much like Skynet network did in the movie 'Terminator', lol I love that movie. Astalavista baby!