Katie wrote:
I have a house that was built in 1930 and has all plaster walls. I
want to replace the trim on all of the walls since it has been painted
MANY times and no longer looks nice. I'm a little hesistant on pulling
the trim off of the walls since I have no idea what to expect behind
it. The trim now is about 6" high. Is it easy to remove the trim and
replace it? The walls are not exactly straight, so I worry that the
trim won't fit correctly. Do I need any special tools or equipment to
put up the trim?

Thanks.

As already said use a utility knife to score the top of the moldling.
get your self a wonder bar to pry the molding off.
http://tinyurl.com/gz559
Place a thin piece of wood behind the bar when prying to prevent
damaging the wall.
But...
Before you start any of this price out the molding you want. You may
need to go higher than 6" depending on how nicely the old stuff comes
off. 6" molding can be expensive esp. if you plan on staining it. If
you are going to paint it I would check out the MDF molding it is
flexible enough to conform to bowed walls.
You will also need these:
http://tinyurl.com/l5e67
http://tinyurl.com/zxfum