List of files in C:\windows\options\install (not cabs) folder for ME installation I've got in virtual machine:-
BASE2 CAB 2,239,963 08/06/00 17:00 BASE2.CAB
CATALOG CAB 2,033,798 08/06/00 17:00 CATALOG.CAB
CLEANHD TXT 13,809 08/06/00 17:00 CLEANHD.TXT
CRYPT32 DLL 468,752 12/09/02 15:51 CRYPT32.DLL
CRYPTDLG DLL 90,384 25/09/02 12:36 CRYPTDLG.DLL
DELTEMP COM 496 08/06/00 17:00 DELTEMP.COM
DOSSETUP BIN 85,404 08/06/00 17:00 DOSSETUP.BIN
DRIVER5 CAB 6,123,008 08/06/00 17:00 DRIVER5.CAB
DRIVER6 CAB 8,192,000 08/06/00 17:00 DRIVER6.CAB
DRIVER7 CAB 1,928,446 08/06/00 17:00 DRIVER7.CAB
DUNZIP32 DLL 98,064 18/06/02 16:33 DUNZIP32.DLL
DZIP32 DLL 130,320 18/06/02 16:33 DZIP32.DLL
EXTRACT EXE 53,767 08/06/00 17:00 EXTRACT.EXE
HELPCTR EXE 499,984 08/01/03 9:24 HELPCTR.EXE
HH EXE 10,752 10/06/02 12:56 HH.EXE
HHCTRL OCX 516,192 16/12/02 13:10 HHCTRL.OCX
HHCTRLUI DLL 88,064 20/05/02 11:09 HHCTRLUI.DLL
HHSETUP DLL 37,888 10/06/02 12:56 HHSETUP.DLL
HTML32 CNV 311,864 26/06/03 22:19 HTML32.CNV
INTL TXT 6,965 08/06/00 17:00 INTL.TXT
ITIRCL DLL 143,872 10/06/02 12:56 ITIRCL.DLL
ITSS DLL 122,368 10/06/02 12:56 ITSS.DLL
MINI CAB 686,680 08/06/00 17:00 MINI.CAB
MSCONV97 DLL 116,288 26/06/03 22:19 MSCONV97.DLL
NET3 CAB 1,190,400 08/06/00 17:00 NET3.CAB
NET4 CAB 2,068,753 08/06/00 17:00 NET4.CAB
PRECOPY1 CAB 2,696,606 08/06/00 17:00 PRECOPY1.CAB
SAVE32 COM 920 08/06/00 17:00 SAVE32.COM
SCANDISK EXE 245,324 08/06/00 17:00 SCANDISK.EXE
SCANDISK PIF 2,857 08/06/00 17:00 SCANDISK.PIF
SCANPROG EXE 4,630 08/06/00 17:00 SCANPROG.EXE
SCANREG EXE 172,494 08/06/00 17:00 SCANREG.EXE
SETUP EXE 5,712 08/06/00 17:00 SETUP.EXE
SETUP TXT 37,455 08/06/00 17:00 SETUP.TXT
SETUP0 WAV 439,824 08/06/00 17:00 SETUP0.WAV
SMARTDRV EXE 45,379 08/06/00 17:00 SMARTDRV.EXE
SMGR DLL 225,552 23/02/01 13:45 SMGR.DLL
SUBACK BIN 244,918 08/06/00 17:00 SUBACK.BIN
SUBACK16 BIN 122,998 08/06/00 17:00 SUBACK16.BIN
SUHELPER BIN 1,488 08/06/00 17:00 SUHELPER.BIN
VSERVER VXD 112,896 25/09/00 18:34 VSERVER.VXD
W9XSETUP BIN 187,520 08/06/00 17:00 W9XSETUP.BIN
WB16OFF EXE 537 08/06/00 17:00 WB16OFF.EXE
WIN1024 BIN 18,720 08/06/00 17:00 WIN1024.BIN
WIN640 BIN 7,788 08/06/00 17:00 WIN640.BIN
WIN800 BIN 11,664 08/06/00 17:00 WIN800.BIN
WINME WMV 11,624,034 08/06/00 17:00 WINME.WMV
WIN_10 CAB 8,192,000 08/06/00 17:00 WIN_10.CAB
WIN_11 CAB 8,192,000 08/06/00 17:00 WIN_11.CAB
WIN_12 CAB 8,192,000 08/06/00 17:00 WIN_12.CAB
WIN_13 CAB 8,192,000 08/06/00 17:00 WIN_13.CAB
WIN_14 CAB 8,192,000 08/06/00 17:00 WIN_14.CAB
WIN_15 CAB 8,192,000 08/06/00 17:00 WIN_15.CAB
WIN_16 CAB 8,192,000 08/06/00 17:00 WIN_16.CAB
WIN_17 CAB 8,192,000 08/06/00 17:00 WIN_17.CAB
WIN_18 CAB 8,192,000 08/06/00 17:00 WIN_18.CAB
WIN_19 CAB 8,192,000 08/06/00 17:00 WIN_19.CAB
WIN_20 CAB 8,192,000 08/06/00 17:00 WIN_20.CAB
WIN_21 CAB 8,192,000 08/06/00 17:00 WIN_21.CAB
WIN_22 CAB 6,166,571 08/06/00 17:00 WIN_22.CAB
WIN_8 CAB 6,263,296 08/06/00 17:00 WIN_8.CAB
WIN_9 CAB 8,192,000 08/06/00 17:00 WIN_9.CAB
WIN_OL CAB 1,049,932 08/06/00 17:00 WIN_OL.CAB
XENROLL DLL 172,664 09/07/02 8:45 XENROLL.DLL
XMSMMGR EXE 14,144 08/06/00 17:00 XMSMMGR.EXE
ZIPFLDR DLL 193,296 10/09/02 16:13 ZIPFLDR.DLL
Is yours anything like? Mine obviously has setup.exe - could email you this if it would help (though you'll obviously need key - and if you can't actually run the o/s you'd need another method to extract it from the registry files (should be in system.dat somewhere) - like loading that into regedit on another machine.