When you create web part pages, there is no way out of the box to include the
Quick Launch menu with the web part page. I know you can use SharePoint
Designer to open the page and remove the following lines:
<asp:Content ContentPlaceHolderId="PlaceHolderPageImage"
runat="server"></asp:Content>
<asp:Content ContentPlaceHolderId="PlaceHolderLeftNavBar"
runat="server"></asp:Content>
<asp:Content ContentPlaceHolderId="PlaceHolderNavSpacer"
runat="server"></asp:Content>

Do any of you know a way to do this without SharePoint Designer? Do you know of
a free Quick Launch web part that can be added to the web part page?