>Is it possible to put the preview window in a vfp window or pageframe? I know that the WindowParentProperty is used in others developement tools to put the preview window in the parent window. Is it possible to do this in VFP?

If Crystal accepts a hwnd for an active window - sure. Not a pageframe though - unless you used a pageframe OCX - which has an hwnd.

>Also, how can I get the window handle from vfp?

The FindWindow Windows API Function will do this.