Windows 7 Console Host – CONHOST.EXE
Conhost.exe will be found in your Windows\System32 folder. It's a new process that installs as part of Windows 7 and Windows Server 2008 R2. The conhost.exe process sitting in the middle between CSRSS and cmd.exe allows Windows 7 to fix problems in the Windows Console in previous versions of Windows. While at the command prompt the scrollbars draw correctly. And you can drag and drop a file from Windows Explorer straight into the command prompt window. You'll find more information at http://blogs.technet.com/askperf/archive/2009/10/05/windows-7-windows-server-2008-r2-console-host.aspx.
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Microsoft