I am trying to determine if I can afford a 15, 20, or 25, year mortgage. 

Current Situation:
Original Loan Amount: $156K for 30 years.
Current Principal Balance: $154,507
Yearly taxes: Around 5K (Escrowed into the mortgage)
Home appraised for: 220K
Current monthly payments: $1412
Interest Rate 5.75%
Loan Originated: 7/2004
State: Pennsylvania/Delaware County

My questions are this:
I want to determine if I can afford a 15, 20, or 25 year mortgage.
A good answer will show good calculations using today's mortgage rates
to give a good approximate monthly payments for a 15, 20, and 25 year
mortgage (make sure you include taxes into your calculation). Included
in this answer will be approximate interest saved in each scenario
compared to a 30 year mortgage. A Good answer will receive a $10 tip.
:)

It is hard to believe this has not been answered. Just go to
bankrate.com and do it yourself.  If you are including taxes then you
should include insurance and home association fees (if any) as well.