More rHelp with my Toshiba DVD-ROM SD-R6112

[Berti_2001]

Hi i followed advice and went to the toshiba website to download the lastest driver and firmware for my DVD-ROM, when installing the driver ot says that the file C:\ATAPI does not exist, it asks me whether i want to create it an i say yes, once copied it proceeds with installation, it then creates working copies of AUTOEXEC.BAK and CONFIG.SYS, it carries out various other procedures and says the operation was successful, it then says that i need to copy MSCDEX.EXE into the C:\DOS\ directory. Where do I find this file to copy?

Many Thanks