Kurzweil SP88x instrument definition

Has anybody created a Kurzweil SP88x instrument definition for Sonar Home Studio 4? If not, does anybody know where I can get one? When I downloaded a Kurzweil zip file from Cakewalk that was suppose to have various instrument definitions in it, all that came up when I clicked on the unzipped file was a message that said my Internet settings were about to be changed.

If nobody can help me, I will *try* to create one myself, although I am new to MIDI and Sonar.

Thanks in advance
Alicia