Uhm, I really doubt this is malware. I just installed Wine. And if the error is coming FROM Wine ... I suspect it's that the DOS command line interface in Wine is looking for C:\windows\system32\run.exe to launch the program but it's not there. Other DOS commands like DIR work. But... "Z:\Users\Jkirk279\documents\helix>HELIX.EXE fixme:module:__wine_load_dos_exe DOS executables not supported on this platform winevdm: can't exec 'Z:\Users\Jkirk279\documents\helix\HELIX.EXE': invalid program file" Okay. Wine has a cmd shell, but while it looks just like DOS it can't launch executables IN DOS. Can somebody suggest the proper way to launch my PSDK-FULL.bat "C:\psdktemp" ? I need to combine the .cab segments. If the instructions are wrong or outdated, how can I do that in Terminal ?