do you qualify for mortage modification

I own a condo and have an outstanding balance of $140k, consisting of $104k primary and $36k secondary. I took the home equity to consolidate debts. At the time the property was valued at $163k but now it is valued at $134k. I'm looking to sell because i am engaged and will be moving into my fiancee's home. Check http://obamamortgage2009.blogspot.com/2009/03/obamas-mortgage-modification-do-you.html If I have a buyer who offers me within say $5-7k of the outstanding, can i agree to assume a loan on the residual and pay the bank the difference over time with interest? The same bank holds both mortgages.