i'm trying the win7 enterprise 64bit build 7600, i do not understand if after the expiring date i can buy a new license to use the same OS without new installation.thanks in advance

Hello,If you're using the trial version from Technet, then you will need to reinstall after the trial is over.http://technet.microsoft.com/en-us/evalcenter/ee388361.aspx Q: What happens after the trial-period expires? A: If you wish to continue to use Windows 7 Enterprise please note that you will be required to purchase and perform a clean installation of Windows 7, including drivers and applications. Please keep this in mind; Windows 7 Enterprise is not available through retail channels.Want to know if your current hardware & software will work with Windows 7? Check out these links: **Windows 7 Upgrade Advisor ** **Windows 7 Compatibility Center**