Topic: no input into Pro Tools 9

My signal path is Yamaha 02r using ADAT card outputs into a Fireface 800 and then into a RAYdat PCIe card into a Mac Pro woth OS10.6.6 I have signal at the fireface virtual mixer onscreen and also at the RAYdat mixer but I cannot get any signal into Pro Tools 9- I have rerouted my optical cable and went from the mixer directly in to the optical input ( toslink) at the computer and I have signal into Protools. Any help is appreciated- I am new to Pro Tools and have been using Sonar previously so the 1st thing I did was try to assign ASIO drivers but was told by RME support that I do not need to assign ASIO for PT 9- thanks