CUBASE SX Install on new Macbook Pro 10.7.5 I7 2.3

This is the message I get when I try to install my old SX on my new Macbook Pro. PLease help.

You can’t open the application Cubase SX Installer because PowerPC applications are no longer supported.

Cubase SX is not supported for 10.7. I believe the last version SX1 was supported for was 10.1. I would suggest upgrading to Cubase 7.5, but please note that 7.5 is not supported for 10.7. Cubase 7.5 is supported for 10.8 and 10.9. Thank you.