Hi Martin, merry Christmas.
It's an installshield archive, there's a couple of programs on Hobbes (search for installshield) but likewise they don't want to run here.
Running strings.exe on setup.pkg gives this,
help
speechdk
dectalk
wllwtalk
wllwtalk\Macros
wllwtalk\Macros\LOTUS
wllwtalk\Macros\COREL
wllwtalk\Macros\COREL\WP70
wllwtalk\Macros\ENCARTA
wllwtalk\Macros\EUDORA
wllwtalk\Macros\MSOFFICE.97
WPCTRL32.DLL
MSVCRT40.DLL
CTL3D.DLL
INETWH16.DLL
INETWH32.dll
SETBROWS.EXE
SPEECH.DLL
VCMSHL.DLL
VCMD.EXE
VCAUTO.TLB
VTXTAUTO.TLB
DECTALK.DIC
WTLKTTSE.DLL
sample.rtx
willowpd.hlp
wtplay.dll
wtblklst.dll
excepted.hlp
hook.dll
exdict.exe
wiltalk.exe
excepted.ini
excpdict.dll
states.dat
abbrev.dat
empp.dll
willtalk.hlp
excepted.cnt
willtalk.cnt
except.dat
setup2.dll
audiodst.dll
itts.dll
readme.txt
license.wri
WillowPond.url
WillowPondBuy.url
123-97C.REC
WPAD_S.CMD
WPAD_C.CMD
NPAD_S.CMD
NPAD_C.CMD
IEXPL_S.CMD
IEXPL_C.CMD
WINHELP.CMD
WHELP_D.CMD
MSPAIN~1.REC
Iexpl2_s.cmd
Iexpl2_c.cmd
hhprnt_c.rec
123-97S.REC
cwc_c.rec
cwc_s.rec
En98Main.cmd
123-97C.CMD
hhprnt_s.rec
ie4c.cmd
ie4s.cmd
OPAPP_C.REC
OPAPP_S.REC
SWTOPIC.REC
TFRAMEC.REC
TFRAMES.REC
wp8_32c.rec
wp8_32s.rec
WTOPIC.REC
WORDPRO.CMD
123.CMD
ORG.CMD
QPRO.REC
WORDP_C.CMD
WORDP_S.CMD
ADR70_S.CMD
WP70_C.CMD
ADR70_C.CMD
WP70_S.CMD
E_FBAR.CMD
E_CIBC.CMD
E_NOTE.CMD
E_LTPOP.CMD
E_FBAR1.CMD
E_CIBC1.CMD
E_CIBC2.CMD
EUDORA_C.CMD
EUDORA_S.CMD
WORD_C.REC
XLMAIN.REC
WORD_S.REC
OUT_C.REC
OUT_S.REC
NOTE.REC
ACCESS.REC
OMAIN_C.REC
OMAIN_S.REC
data.z
Guess try on real windows. Note that the exe's are mz, same as old OS/2 and might only run on win9x