Listbox embeded in a page

Hai all

To make it simple..I have a WPF application in which i have added a page .In the page i have defined a Listbox in which i have defined it my style using  Data Template.As one of my listbox item i want to embed another page or window in it.I can embed the page but my problem is i am getting Horizontal and vertical scroll bar in the embed window/page which i want to manually resctict it..How i may go about this...

Hope i made myself clear....

With Regards
P.Krishna Prasad