Windows 7 has been announced and is available for download in the RC (Release Candidate) version free of charge from Microsoft. The RC version will be usable for over a year and will not expire until June 2010. This option give owners of refurbished laptops, or those considering purchase of a used notebook the option to try the software and verify that it will work to their satisfaction. If you want to try this approach, backup your computer, install Windows 7 RC and verify that it works. If you have difficulties running Windows 7 you can go back to the previous operating system and will have avoided the expense of purchasing software that didn't work on your notebook. Many of the refurbished Laptops Under $300 will perform very well on Windows 7. Another tip, if the laptop computer runs Windows Vista, there is no question it will run Windows 7. Good luck in testing your laptop on the new software.