Hi Matt, I have sorted it. When th2 was loaded up with sonar x3 it it sat in the soft synths selection and when selected the track appeared with the th2 selected but would not operate. When i upgraded to the full version this this did'nt appear in the soft synth inserts so it threw me, but then i thought hang on! and i selected a track and then went into audio effects and guess what the full th2 version was sat there and works perfectly.
Thank You for your help, i am new to these forums but think it will prove worthwhile.