Tu as peut-être une solution ici :
http://ntcompatible.com/Nachines.exe_not_a_valid_Win32_application_t28008.html
1. Insert your WinXP CD into the CD drive or DVD drive.
2. Click Start, and then click Run.
3. In the Open box, type cmd, and then click OK.
4. At the command prompt, type the following commands, pressing ENTER after each command:
expand CD-ROM Drive Letter:\i386\config.nt_ c:\windows\system32\config.nt
expand CD-ROM Drive Letter:\i386\autoexec.nt_ c:\windows\system32\autoexec.nt
expand CD-ROM Drive Letter:\i386\command.co_ c:\windows\system32\command.com
exit
5. Start or install the program