Editions of NT 4 and 2000

Hi,

I was wondering if there is any way that I can determine the edition of an NT 4.0 server without rebooting the server. There are 2 editions 1: NT Server and 2: NT Enterprise Server. In order to upgrade an NT server you can use a Windows 2000 Server or Advanced Server CD to do the installation. However if the NT edition is Enterprise then ONLY Windows 2000 Advanced server can be installed. To determine which version of Windows 2000 Server I will need to upgrade to I require the NT edition. Any help will be GREATLY appreciated.

Regards
ShaMen