What kind of loan can I get to consolidate private student loans?

I have $100,000 in private student loans from two lenders. The interest rate is over 10%. Is there a way to get another loan to pay this off at a lower interest rate? What kind of debt consolidation program should I consult? Most student loan companies only deal with Federal loans it seems. I keep seeing ads for mortgage loans with low monthly payments– is there something similar I could get for a personal loan? THANKS!