Qt Designer open edition. He.........lp............!!!

Help me, please......!!!! How can I define a form tobe parent widget (MDI Form) from Qt Designer if I can not change mainwindow.cpp and mainwindow.h files ? How can I define a form tobe a child form from Qt Designer if I can not change childwindow.cpp and childwindow.h files? Is it really impossible to have an MDI Form if I only use Qt Designer open edition? ps. I have Qt Designer by buying SuSE 9.1 Professional cds. __________________________________ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail