Re: Problem with modifying menu structure in Tiki 2.0 RC2: I can't find it!
In the "Action" column for menus on the Admin Menus page there should be a "Configure/Options" icon next to the "Edit" icon (it's the square thing without the pencil). Click this to configure the menu items.
About the logo, did you check the "Site Identity" checkbox under the "Theme" tab? Also did you check the "Activate" box above the logo path box?
-- Gary