Import old .sng (Cubase VST32 5.1) into Cubase 7?

I have old .sng (Cubase VST32 5.1) files I need to work on.

Before Apple latest Mac Mountain Lion OS, I could start Cubase SX 3 and use its import function to convert the files.

After Mountain Lion I can’t run the Cubase SX 3 as this is a PowerPC software.

Is there an up to date method to convert .sng (Cubase VST32 5.1) files into Cubase 7 files in Mac Mountain Lion 10.8.4?

I started this- http://www.steinberg.net/forums/viewtopic.php?f=181&t=47430