On Wed, 5 May 2010 13:23:36 -0700 (PDT), "SonomaProducts.com"
wrote:

I am wondering about what sequence of installation. Do I need to
remove the existing entry door, then get the floor in place and then
install the new door so the sill is over the floor.

The closet has carpet and I want to leave it that way and have the HW
stop at the centerline of the door. Should I just install the new
prehung door down to the sub floor first and then undercut it to add
in the hardwood under the front half of the jamb?

I guess I'll disagree with some here and suggest you at least hang the
doors first and maybe hold off on the trim until the floor is down.
There are a couple of issues when hanging the frames after the
flooring. For the jambs to be plumb the header needs to be level.
Even on new homes it's pretty common to have to shim one jamb leg up
to get the head level. If you have to do this on top of the new floor
you'll have a gap there or be trying to figure out shorten the
opposite leg.
In the old days, wood floors were installed before the doors but now
days, the floors go in later so the exterior doors are almost always
hung prior to the finished floor. Not necessarily better but more
common. If you run the flooring under your exterior door someone will
be looking for the Multimaster when they want to change floorings
later. If you install the exterior door first you want to make sure
that the threshold is raised far enough to clear the wood floor and a
rug. We usually add 1/2" under all exterior doors and 3/4" isn't too
much. Most new exterior doors also have an adjustable threshold that
you cannot nail in to. Any base shoe will need to be nailed to the
floor. Your decision on the exterior door might be easier to make
depending on whether or not the opening is tall enough to raise the
new frame so the floor can run under it.
Again, I'd hang the jambs and hold off on the trim until the finished
floor is down. Mostly because I've seen too many flooring guys tear
up my trim when they try to back cut for the flooring
Just a few things to contemplate.;-)

Mike O.