Sigma 10-20mm 1:4-5.6 DC with Sony NEX-5N ?

Does anyone know if I can use my Sigma 10-20mm 1:4-5.6 DC for Pentax/Samsung Cameras with a Sony NEX-5N?

Reason I ask is that I have ordered a NEX-5N and would like to know if this Sigma wide angle I have will work with it. I found via google search that a guy was using the one for his Nikon with the Nex-5N . Just not sure which adapter ring I need or if they make one for the Pentax/Samsung Sigma version? Any help will be greatly appreciated.

Thanks.