5. In a computer operating on a specialized original native file format with a Disk File Header (DFH) for each file, a system for accessing a CD-ROM holding a first format Container (CD.backslash.FILE) with industry standard byte stream data files and Directory of a first format and converting said first format to individual second format files compatible for said specialized original native file format, said system comprising: (a) means for accessing said first format Container (21d)(CD.backslash.FILE) holding said byte stream files of first format; (b) means to execute a first interface program (MCP.sub.-- FILEWRAPPER, 36) which initiates an input read procedure (35i) to transfer said first format Container (21d, CD.backslash.FILE) to a second interface program (38); (c) means to execute said second interface program (MCP.sub.-- WRAPPER, 38) to re-create said first format Container (21d) into resultant multiple native second format files (MY/FILE/=(21).
5. In a computer operating on a specialized original native file format with a Disk File Header (DFH) for each file, a system for accessing a CD-ROM holding a first format Container (CD.backslash.FILE) with industry standard byte stream data files and Directory of a first format and converting said first format to individual second format files compatible for said specialized original native file format, said system comprising: (a) means for accessing said first format Container (21d)(CD.backslash.FILE) holding said byte stream files of first format; (b) means to execute a first interface program (MCP.sub.-- FILEWRAPPER, 36) which initiates an input read procedure (35i) to transfer said first format Container (21d, CD.backslash.FILE) to a second interface program (38); (c) means to execute said second interface program (MCP.sub.-- WRAPPER, 38) to re-create said first format Container (21d) into resultant multiple native second format files (MY/FILE/=(21). 7. The system of claim 5 to wherein said second interface program (38) includes: (c1) means to verify each output file name and call said input Read procedure (35i) and verify option information for each data file in said first format Container (CD.backslash.FILE 21d); (c2) means to verify that each said data file in said first format Container is a "wrapped" file in said first byte stream format; (c3) means to call said input procedure (35i) to access the Disk File Header (DFH) of each data file of said wrapped file; (c4) means to verify the options selected and to verify the DFH information for said wrapped file. (c5) means to call an input procedure (35i) to complete the access of the DFH and DFH checksum for each said data file; (c6) means to calculate the running checksum located in local memory for each said data file; (c7) means for creating a new system Disk File Header as an output file for placement in local memory (18); (c8) means to use said input read procedure (35i) to read each input data file of said first format Container and then write an output file (MY/FILE 21) on disk (20, MYDISK); (c9) means to calculate the running checksum in local memory (18) for each row of each file being processed within said first format Container (CD.backslash.FILE); (c10) means to convert each input file of said first format Container (CD.backslash.FILE) to an output file of said second specialized format Container (MY/FILE/=) (21); (c11) means to obtain the stored checksum of the entire first format Container (CD.backslash.FILE, 21d) for comparison to the calculated running checksum that was set in local memory (18); (c12) means to exit the interface program (38) when the checksums match or to send an error signal if the checksums do not match.