Under Obama's new plan, you may be eligible to get a significant reduction in your payment if your principal balance is greater that the Fair market value of your home.
Check this out: http://www.financialstability.gov/makinghomeaffordable/
They say that they'll be getting a list together of servicers (mortgage lenders) who will sign the contract and participate. Currently, servicers and mortgage companies are not required to participate with the plan (it's voluntary right now) but there is significant incentives for lenders to participate.
Check out the above to find out if you qualify to have your payment modified or refinanced. In the article I'm reading from the site above, they say that lenders will be functional come April... they just got their paperwork details of the plan March 4th, so they claim that servicers may be delayed in being able to start the program.
Hope this helps you guys out!