When should I refinance?
If you plan on living in your home for the next ten years than you would probably be better off refinancing.
Simple steps to figure out the breakeven point for a refinance.
Step 1. Figure out the difference between the old and new monthly payment.
Step 2. Figure out the relevant closing costs. Here's a good article on closing costs.
http://abcnews.go.com/Business/ConsumerFinance/story?id=6498727&page=1
http://www.nytimes.com/2010/09/19/realestate/19mort.html