If you got hold of a beta of Windows 7 way back in January of this year, it's important for you to know that the install will expire in in one week from the day I'm authoring this post. So here's your one week warning: Windows 7 Beta expires July 1, 2009.

The good news is you're not totally shafted. It's pretty easy to get your hands on a copy of the Windows 7 RC. Although the upgrade scenario isn't supported (my personal policy is to always start fresh when using beta software, especially when it's the OS), the Windows engineering team has written a blog post that describes how to attempt to perform an upgrade.

Anyway, the moral of the post is this: if you are still running the Windows 7 Beta, the clock is ticking. Back up your data and either move to the Windows 7 RC (it works *great*, by the way) or back to an RTM version of Windows.