Is your mortgage held by a bank or a private finance company? Is it a Freddie/Fannie Mae?
I ask because I am sure you have heard about the recent $25 Billion settlement with certain banks in 49 states, part of the settlement is to help those current on their loans refinance no matter what they owe. I do not believe this includes loans backed by Fannie and Freddie.
Even though you are on a mod, the new settlement is also offering principal reductions for who are behind on their mortgage so you may wish to inquire about this as well.
The best thing to do is call your bank, the settlement occured early February so the banks have had some time gather some information although I am sure you understand as you have been going through the mod process that there is typically more talk then action.