Microsoft has sold more than 240 million licenses for Windows 7 in its first year of existence, making it the fastest selling OS in history.

And, to mark its first birthday, Microsoft is releasing the Windows 7 Family Pack to the UK.

Okay, so in terms of OS news, this is hardly as exciting as the Mac OS X Lion preview from earlier in the week, but it's still noteworthy nevertheless.

The Family Pack allows you to install Windows 7 (Home Premium, 32 or 64-bit) onto three separate PC's meaning that you can get your home network all synced up via the HomeGroup option.

The official RRP for Windows 7 Family Pack is £149.99, but as always, Amazon, Play and the gang are all undercutting this, so shop around for the best deal.

It's available now.

Not sure about Windows 7 yet? Check out our Windows 7 Ultimate review

And also take a look at our feature: How to upgrade to Windows 7