2000 E46 323i, 3.0L and 2.0L Z3's
Thank you for your help. The files unpacked but Norton antivirus didn't like them and removed them. Not sure if there is a virus in the pack or not?You have to use 7z to unzip, the password is MS4X as is specified on the MS4X website..
Anyway, I have moved on with my project and no longer need to use MS4x Flasher or DME files.
Once again, thank you for your help.