Hello, a few more remarks: the name of this directory is the version number ot the BIOS herein. All files are for complete BIOS roms, hence they are exactly 128kB in size. The first character gives the chipset: M = Mercury ( the Pentium chipset ) S = Saturn ( the 486 chipset ) The second character gives the bus: E = EISA I = ISA the files NE... and ME... are test versions, I was not told what they are. The men suggested to delete them before giving this to others. So do with them on your own risk. Reinhard Kirchner