if not an xref, then put title block in model space (current drawing) and make viewports of title block for each layout tab, then modify model space title block and all layout tab tilte-blocks are changed. this way your title block can be within the drawing. but i prefer x-ref, no path, in current folder.
Intel P4 1.7 GHZ
768 RDRAM
Win 2000 Pro
Autocad 14, 2002 with EP 2.3.1