You can test your copy of the distribution diskette, to make sure the copy is accurate, by entering the command CHECK *.* at the DOS prompt. The output should look like this: CRCK ver 4.2B (MS DOS VERSION ) CTL-S pauses, CTL-C aborts --> FILE: ABOARD . CRC = 9B FC --> FILE: ABOARD .DOC CRC = AE 02 --> FILE: ANIMAL . CRC = 91 B1 --> FILE: CHECK .COM CRC = BD 22 --> FILE: CHECK .TXT CRC = unknown --> FILE: CONFIG .COM CRC = 71 16 --> FILE: DOCTOR . CRC = 4C 3E --> FILE: ESIE .COM CRC = A9 58 --> FILE: FINAL .USE CRC = B7 3F --> FILE: GETAWAY . CRC = 7C 82 --> FILE: GLASS . CRC = A0 08 --> FILE: HAIR . CRC = 99 4A --> FILE: HEIGHT . CRC = B0 05 --> FILE: HISTORY . CRC = DD 31 --> FILE: MANUAL . CRC = 01 EE --> FILE: NOVICE . CRC = 63 D7 --> FILE: READ .ME CRC = 82 DB --> FILE: SUPPORT . CRC = 3A 64 --> FILE: TUTOR . CRC = B1 C9 ---------------------> SUM OF CRCS = unknown DONE Note: the CRC for CHECK.TXT will be incorrect as will be the total, because Lightwave cannot write a file's CRC to the file without altering the CRC of the file!