D3sign3r posed a question back in February 2006 thread559-148079 (quoted below); and SolidWorks 2009 has finally provided an answer. I hope that this info helps (solution beneath quote)!
"Is it possible to embed or create a functioning revision table in the Sheet document? That way, when I...
I have had the same problem with adding balloons to drawings with exploded views.
On any particular drawing (with exploded views) I can attach the balloon leaders to 95% of the components; but the other 5% don't let me select ANY faces or edges. I opened the assembly while the drawing is open...
