Hi,
  I've just filled in a form by using a gif as a background in OOo Draw and
found two related problems; the form was a traditional form with boxes for each
character to write in.

    1) When you select the text tool and click on the top corner of the box you
might hope that the text would then be in the right position - but this is
rarely the case since the font normally has a bit of space at the top.
    2) Even with a non-proportional font it is difficult to get the font size
and spacing to correspong exactly with the size and spacing of the boxes on a
particular form.

I suggest what would be nice would be something that let you 'measure' a box and
set the font characteristics based off that box.  So I would see it that you
would select this tool and click on the top left of the first box on a row and
then click on the bottom right of the same box and then the top left of the next
box (to cope with spaces between boxes).  That would then set font size and
spacing appropriately.