Just some more info on HashMyFiles you can do reports aslo you can do whole folders and it will highlight files that are the same you can also sort them. Code: ================================================== Filename : WXPOEM_EN_Compaq.iso MD5 : 07E4B112567A324ACB01D999D5C27768 SHA1 : E692E3D758B82BF677A4BF479BD41A4E9ECA4A2F CRC32 : 4D9539FB Modified Time : 07/05/2009 11:33:58 Created Time : 07/05/2009 11:33:58 File Size : 686,196,736 File Version : Product Version : Identical : Extension : iso ================================================== ================================================== Filename : WXPOEM_EN_Emachines.iso MD5 : 7836180868D26F82A713639E37FA9E80 SHA1 : F2EA1C51DEB26B8B9CBB27977AF1A2742BE62826 CRC32 : F4610961 Modified Time : 19/11/2008 16:35:42 Created Time : 19/11/2008 16:35:42 File Size : 686,264,320 File Version : Product Version : Identical : Extension : iso ================================================== ================================================== Filename : WXPOEM_EN_HP PAVILION.iso MD5 : 60721F5BE459AC6AEDBC17AD5AC43322 SHA1 : 129B16D0A2DD96CF0A82E16A43E41C4D1D7A64D9 CRC32 : 078E908C Modified Time : 25/03/2009 15:46:52 Created Time : 25/03/2009 15:46:52 File Size : 686,196,736 File Version : Product Version : Identical : Extension : iso ==================================================