Some of the old software before 2010 may not be able to install/run normally on x64 or Windows 10 systems. Be aware of it before purchasing it.
System Requirements• Windows Server 2003 Standard or Enterprise x64 Edition Service Pack 1 (or later)
• Microsoft® Internet Information Services (IIS) version 6.0 for Windows Server 2003 Standard or Enterprise x64 Edition
• Microsoft .Net Framework 2.0 (or later), including ASP.NET
• Simple Message Transfer Protocol (SMTP) virtual server
• Microsoft SQL Server 2000 Service Pack 2 (or later)