My house was built in 1988. As far as I know, the windows were bought from
Lowe's. Today, my son's dog chewed up a window ledge or sill (inside). It
appears that the piece that needs to be replaced was installed as a complete
unit. It appears that the entire window has to come out. My guess is that it
will be impossible to match the style of the wood.

In trying to understand how the window frame is assembled, I removed the "skirt"
beneath an identical window in the bathroom. It had been (poorly) secured when
it was nailed with a nail gun. Some of the nails missed the underlying wood
frame. When I removed the piece, I noticed that the window seems to be poorly
installed. Cold air leaks around the frame. The big question, though, is how do
I back the nails out without splintering the face of the molding? When I tapped
them out, the face splintered, even after I removed the colored filler putty
that was used to fill the nail holes. Should I have pulled them through?

Do you have any suggestions on repairing the window frame? My carpentry skills
are not good, nor am I familiar with which window parts are available for
purchase at Lowe's or Home Depot. Is there a company that can likely match the
molding? Does anyone want a dog?