Try your original code with ALWAYSONTOP = .T.

>I my application i have a lot of forms.
>I have an only as top level form, the first form in the application.
>The other forms have the properties:
>always on top = .T.
>desktop = .t.
>showwindow = 1
>windowstate = 0
>windowtype = 1
>
>with this propierties i have the forms ( except the first , in it i have
>showwindow = 2)
>The previous form of the report have the same propierties:
>always on top = .T.
>desktop = .t.
>showwindow = 1
>windowstate = 0
>windowtype = 1
>and two command botton in the first in the valid i have :
>REPORT FORM &_ZINFORME ENVIRONMENT NOCONSOLE TO PRINT PROMPT
>in the second botton of this form, in the valida i have :
>_SCREEN.CONTROLBOX = .F.
>loForm = CREATEOBJECT("Form")
>WITH loForm
> .WINDOWSTATE = 1
> .CAPTION = "Listado por Pantalla"
> .MINBUTTON = .F.
> .MAXBUTTON = .T.
> .CLOSABLE = .T.
> .MOVABLE = .T.
> .HALFHEIGHTCAPTION = .T.
> .BORDERSTYLE = 3
> .BACKCOLOR = RGB(255,255,255)
> .ALWAYSONTOP = .T.
>ENDWITH
>lcFormName = loForm.Name
>KEYBOARD '{CTRL+F10}'
>REPORT FORM &ZINFORME PREV WINDOW &lcFormName
>_SCREEN.CONTROLBOX = .T.
>
>RELEASE loForm
>
>ZINFORME is the variable withe the name of the report.
>With this code the report appear behind all the forms of my application.
>Behind the principal form too in VFP 6.0.
>With VFP 5.0 this report appear forward all the screen correctly how i need.
>Many thsnks