Add job dialog box and autosorting.

I have a three column list (B:D) in a multiple sheet
workbook that deals with B:Active yes/no C:Job # and
D:Job Name. I need a dialog box to pop up when I push
an ADD JOB button, to insert the next job (including
job # and active status)into the list.

I can figure out how to design the dialog box to enter
this info into one row (5B:5D for example), but I don't
know how to A)make the list auto sorting, by D, then by
C, or B)make the dialog box enter info into the next
unfilled row.

Column A has a countif formula all the way down the sheet,
and column E has a totalling formula all the way down,
so the next row won't be completely empty, just B:D.
Can someone please help me with this. I would appreciate
it if you guys could save me once again.

Thanks
Robert