After all no problem with NewWindow2 event. It was my fault,I just improperly cancelled in my BeforeNavigate2 handler HREF pointing to javascript.
Also anything similar to the code below does work ( could wrapped as class).

* NewWindow2 Event 
LPARAMETERS ppdisp, cancel
 DO FORM ie_newwindow NAME ie_newwindowref linked
 ie_newwindowref.oie.RegisterAsBrowser = .T.
 ppDisp = ie_newwindowref.oie.Object
 ie_newwindowref.show() 

>NewWindow2 does not seem to be triggered at all. Any thoughts what prevents it from happening? I am trying to drive certain Web site in a form which has some popups ( calendars and etc... ) . Assuming if I succeded with enabling NewWindow2 would it be supposed to work in Browser control ?
>
>Microsoft Knowledge Base Article - 184876 with VB example is the following
>
>

>Private Sub WebBrowser1_NewWindow2(ppDisp As Object,
>                                   Cancel As Boolean)
>   Dim frmWB As Form1
>   Set frmWB = New Form1
>
>   frmWB.WebBrowser1.RegisterAsBrowser = TRUE
>
>   Set ppDisp = frmWB.WebBrowser1.Object
>   frmWB.Visible = True
>End Sub
>

>
>TIA
>Michael