When it comes to list the skills that I've put together during 28 years of professional career it can be quite long and boring.
Let me list here only what I think it's worthy citing nowadays:
- Windows Server® Technologies (2000, 2003, 2008), Windows Server SystemTM
- .NET framework (from 1.0 to 3.5)
- Visual C#®, Visual C++®, Visual Basic®, Visual Studio ®, Visual Source Safe®
- SQL Server® (till version 2008)
- Active Directory®, ActiveSync®, SharePoint®
- Terminal Service RemoteApp®
- Linux®
- Network design
- Project management