It is a matter of taste and as old Roman wisdom teaches de gustibus non est dispudandum. I use this.
2 * $Workfile: $
4 * This file contains implementation of xxxxxxxx class.
6 * Note:
8 * (C) Copyright 2007 My Company Ltd.
9 * All rights reserved.
11 * $Revision: $
13 * $Log: $
It includes source control tags which are standard and supported by most source control systems.
If you plan to use this you should really include it into your Visual Studio new file template so that you don't have to copy'n'paste it every time you create a new class.