Z3TA+2.1 - No Sound Through PC

Hi - I've just downloaded Z3TA+2.1 today, with great anticipation, but I have no sound through PC....! When I use mouse volume levels are moving, same when I play keys through Roland SH 201 - but no sound... All other plug ins are fine - Kinetic, Dimension, Rapture etc.. Probably something basic I'm missing but not sure what - help please?
 
I'm running Windows 7 64 bit (loads of memory) with Sonar LE 8.5.
 
Another quickie - the ZT3TA doesn't seem to be recognised within the Sonar LE directory in the same way that the other plug ins and soft synths are - any reason?
 
Thanks
 
Kauchy