Very easy protection. There are many ways to crack this.
First load Winword 97 and go to EXTRAS/MAKROS/VISUAL BASIC-EDITOR.
Then open MODULES and then doubleclick AboutWOPR . The password is:

8101-37-9882woprdot

Search for: Public Function IsRegistered()
And what do you find:
Public Function IsRegistered() As Boolean

    '***** NORMAL VERSION *****
    IsRegistered = False
    If GetUserID$ = MakeIDNumber$( _
        GetUserName$) Then IsRegistered = True

    '****** ESD VERSION ******
'    IsRegistered = True
'    SetUserID "1105-38-1019"
'    SetUserName "Electronic Software Delivery"

End Function


You can use the nicely included Serial, or you change 
IsRegistered = False <into> IsRegistered = True

Have phun with the regged Version. 