Hi Orianel,
If you are using an 003 Factory, you may want to try the firmware update here.
www.dv247.com/news/Digi%20003%20Firmware...20MIDI%20Mode/131360
You may also need to get the Digidesign standalone drivers if you do not also have Pro Tools installed on your system.
www.digidesign.com/index.cfm?navid=54&am...d=1&itemid=23882
After this, open Sonar and go to Options > Audio. Set the 003 for the Timing Masters in the General tab. Go to the Drivers tab and make sure it is checked under the Input and Output drivers. You should be all set after this.
Sincerely,
Rob Fusco
Berkleemusic
Customer Service Rep