On Thursday Microsoft will, at long last, release the latest version of Windows. Windows 7 is a massive improvement over its predecessor, and a great upgrade for users of Windows XP and Vista - read our full review here for details.

On the other hand, it isn't always that cheap. Microsoft did sell some copies for just £50 each, but now that offer has expired most stores are offering Windows 7 Home Premium for around £80 to £100. As of today, though, there's a way to get three copies for just £43 each.

The Home Premium Family Pack includes everything you need to upgrade three computers running either XP or Vista to Windows 7. Its recommended price is £150, but we've found a way to get it for just £130. Click the jump for details.