I would say don't do this. Because, a checkbox invites editing and basically says 'I am editable' If the field is not editable, don't use a checkbox. Of course if it is, then it is the best thing to do for yes/no, true/false field.
4/ Your buttons in 'Find Rooms' are not all 'Find Rooms' 5/ Why can't you have the search controls all on the same screen? I suppose 'Search Rooms' pops up a dialog with more search field widgets? If there isn't enough screen estate then put non-essential stuff like 'Search Help' and 'search log' just in a menu. 6/ Top level Mode menu??? 7/ Why does the horizontal scroll bar show up? It doesn't need scrolling, shouldn't do that. 8/ Borders are over fussy.