I've gone through this once on insurance (hit a deer), and will be doing
it again (Civic hit me).  The sheet metal comprising the two front
panels (above and below the big grille) are not structural and can be
"peeled off". Underneath you will find thick "structural" metal, and if
this is bent then it will need to be pulled out by a competent shop.

 The two corner pieces are structural only because they contain the A
pillar, below that they are not. The standard way to replace them is to
cut the A pillar at the mid point on both the vehicle and the
replacement panel, insert a tube to provide reinforcement for the joint
and weld it in place.  These corners aren't really too expensive either,
considering their importance and that they are a dealer only item, about
$250 each.

How the doors line up and operate will give you a good indication of how
much structural deformation has occurred, as well as the condition of
the radiator.

In my first repair there was no damage to the underlying heavy gauge
structural metal, and replacement of one corner panel and the lower
sheet metal cost $1800, including painting.  Unfortunately, it was all
undone by the Civic.  This time I took the money and bought a stereo
along with a few other doo dads.  With a little paint to prevent rust,
aligning the headlight, and an $80 bra it's "fixed" for now!

Stuart